Transition away from GitHub repository

* Change link footer and onboarding model to point to our personal Git
  repository and direct folks to email us for collaboration
* Remove now-unnecessary .github folder and add it to .gitignore [I am
  not actually sure if this will prevent us from getting those files
  again in the future.]
* Restore English locale to upstream version and move our changes into
  the en-cafe custom locale.
* Remove most of the README for clarity.

After GitHub's contract with ICE came to light, we moved our personal
projects away from the site. With Copilot now effectively laundering
code under free licenses through machine learning by claiming that
training a model is "fair use" even when it directly quotes the input,
it's clear now that making the effort to move our Mastodon fork off of
GitHub is worth the effort. But even if the model *never* recited
anyone's source, we consider it to be clearly unethical to use open
source code in this way without a permissive license or written
consent from the authors of any non-trivial contributions. Whether or
not the law agrees, this is clearly a derivative work in the colloquial
sense of the term.

We needed to build our own CI/CD solution in the next week and a half
anyway because Docker Hub is removing automatic builds from the free
tier.

We're under no illusions that moving to our personal Git host will
actually stop anyone from doing whatever they want with what we post
publicly on the Internet. But we're both sending a message and
learning how to build our own infrastructure, which will hopefully be
helpful to us in the future.

You can read more about GitHub's ICE deals here:
https://www.zdnet.com/article/microsoft-github-ceo-why-we-defend-ice-deal-in-the-face-of-employee-anger/

You can read about GitHub Copilot quoting source code, and the steps
they've taken to reduce its frequency, here:
https://docs.github.com/en/github/copilot/research-recitation

4 files changed, 21 insertions, 7 deletions

diff --git a/app/javascript/flavours/glitch/features/ui/components/link_footer.js b/app/javascript/flavours/glitch/features/ui/components/link_footer.js
index db0d2eda7..533d9e09b 100644
--- a/app/javascript/flavours/glitch/features/ui/components/link_footer.js
+++ b/app/javascript/flavours/glitch/features/ui/components/link_footer.js
@@ -58,11 +58,12 @@ class LinkFooter extends React.PureComponent {
         <p>
           <FormattedMessage
             id='getting_started.open_source_notice'
-            defaultMessage='GlitchCafe is open source software, based on {Glitchsoc} which is a friendly fork of {Mastodon}. You can contribute or report issues on GitHub at {github}.'
+            defaultMessage='GlitchCafé is free open source software, based on {Glitchsoc} which is a friendly fork of {Mastodon}. You can see our source code on {github} and report bugs, request features, or contribute to the code by emailing {admin}.'
             values={{
-              github: <span><a href='https://github.com/pluralcafe/mastodon' rel='noopener noreferrer' target='_blank'>pluralcafe/mastodon</a> (v{version})</span>,
+              github: <span><a href='https://git.starfall.systems/pluralcafe/mastodon/' rel='noopener noreferrer' target='_blank'>our Git repository</a> (v{version})</span>,
               Glitchsoc: <a href='https://github.com/glitch-soc/mastodon' rel='noopener noreferrer' target='_blank'>glitch-soc/mastodon</a>,
-              Mastodon: <a href='https://github.com/tootsuite/mastodon' rel='noopener noreferrer' target='_blank'>Mastodon</a> }}
+              Mastodon: <a href='https://github.com/tootsuite/mastodon' rel='noopener noreferrer' target='_blank'>Mastodon</a>,
+			  admin: <a href='mailto://admin@plural.cafe' rel='noopener noreferrer'>admin@plural.cafe</a> }}
           />
         </p>
       </div>
diff --git a/app/javascript/flavours/glitch/features/ui/components/onboarding_modal.js b/app/javascript/flavours/glitch/features/ui/components/onboarding_modal.js
index 935c26be6..8f993520a 100644
--- a/app/javascript/flavours/glitch/features/ui/components/onboarding_modal.js
+++ b/app/javascript/flavours/glitch/features/ui/components/onboarding_modal.js
@@ -141,7 +141,19 @@ const PageSix = ({ admin, domain }) => {
     <div className='onboarding-modal__page onboarding-modal__page-six'>
       <h1><FormattedMessage id='onboarding.page_six.almost_done' defaultMessage='Almost done...' /></h1>
       {adminSection}
-      <p><FormattedMessage id='onboarding.page_six.github' defaultMessage='{domain} runs on Glitchsoc. Glitchsoc is a friendly {fork} of {Mastodon}. Glitchsoc is fully compatible with all Mastodon apps and instances. Glitchsoc is free open-source software. You can report bugs, request features, or contribute to the code on {github}.' values={{ domain, fork: <a href='https://en.wikipedia.org/wiki/Fork_(software_development)' target='_blank' rel='noopener'>fork</a>, Mastodon: <a href='https://github.com/tootsuite/mastodon' target='_blank' rel='noopener'>Mastodon</a>, github: <a href='https://github.com/glitch-soc/mastodon' target='_blank' rel='noopener'>GitHub</a> }} /></p>
+      <p>
+		  <FormattedMessage
+		    id='onboarding.page_six.github'
+		    defaultMessage='{domain} runs on GlitchCafé, which is based on {Glitchsoc}, a friendly {fork} of {Mastodon}. Glitchsoc is fully compatible with all Mastodon apps and instances. GlitchCafé is free open-source software. You can view the source code on {github} and report bugs, request features, or contribute to the code by emailing {admin}.'
+		    values={{
+		      domain,
+		      fork: <a href='https://en.wikipedia.org/wiki/Fork_(software_development)' target='_blank' rel='noopener'>fork</a>,
+	          Mastodon: <a href='https://github.com/tootsuite/mastodon' target='_blank' rel='noopener'>Mastodon</a>,
+		      Glitchsoc: <a href='https://github.com/glitch-soc/mastodon' target='_blank' rel='noopener'>GlitchSoc</a>,
+              github: <a href='https://git.starfall.systems/pluralcafe/mastodon/' rel='noopener noreferrer' target='_blank'>our Git repository</a>,
+			  admin: <a href='mailto://admin@plural.cafe' rel='noopener noreferrer'>admin@plural.cafe</a> }}
+		  />
+	  </p>
       <p><FormattedMessage id='onboarding.page_six.apps_available' defaultMessage='There are {apps} available for iOS, Android and other platforms.' values={{ domain, apps: <a href='https://joinmastodon.org/apps' target='_blank' rel='noopener'><FormattedMessage id='onboarding.page_six.various_app' defaultMessage='mobile apps' /></a> }} /></p>
       <p><em><FormattedMessage id='onboarding.page_six.appetoot' defaultMessage='Bon Appetoot!' /></em></p>
     </div>
diff --git a/app/javascript/flavours/glitch/locales/en-cafe.js b/app/javascript/flavours/glitch/locales/en-cafe.js
index 6886de5d3..48aa9edb6 100755
--- a/app/javascript/flavours/glitch/locales/en-cafe.js
+++ b/app/javascript/flavours/glitch/locales/en-cafe.js
@@ -2,7 +2,8 @@ import base_english from 'flavours/glitch/locales/en';
 import inherited from 'mastodon/locales/en-cafe.json';
 
 const messages = {
-  //  No new translations for glitch-soc strings.
+  'getting_started.open_source_notice': 'GlitchCafé is free open source software, based on {Glitchsoc} which is a friendly fork of {Mastodon}. You can see our source code on {github} and report bugs, request features, or contribute by emailing {admin}.'
+  'onboarding.page_six.github': '{domain} runs on GlitchCafé, which is based on {Glitchsoc}, a friendly {fork} of {Mastodon}. Glitchsoc is fully compatible with all Mastodon apps and instances. GlitchCafé is free open-source software. You can view the source code on {github} and report bugs, request features, or contribute to the code by emailing {admin}.',
 };
 
 export default Object.assign({}, base_english, inherited, messages);
diff --git a/app/javascript/flavours/glitch/locales/en.js b/app/javascript/flavours/glitch/locales/en.js
index 699affd70..90e924d4a 100644
--- a/app/javascript/flavours/glitch/locales/en.js
+++ b/app/javascript/flavours/glitch/locales/en.js
@@ -1,7 +1,7 @@
 import inherited from 'mastodon/locales/en.json';
 
 const messages = {
-  'getting_started.open_source_notice': 'GlitchCafe is free open source software based on {Glitchsoc} and {Mastodon}. You can see our source code on GitHub at {github}.',
+  'getting_started.open_source_notice': 'Glitchsoc is free open source software forked from {Mastodon}. You can contribute or report issues on GitHub at {github}.',
   'layout.auto': 'Auto',
   'layout.current_is': 'Your current layout is:',
   'layout.desktop': 'Desktop',
@@ -10,7 +10,7 @@ const messages = {
   'getting_started.onboarding': 'Show me around',
   'onboarding.page_one.federation': '{domain} is an \'instance\' of Mastodon. Mastodon is a network of independent servers joining up to make one larger social network. We call these servers instances.',
   'onboarding.page_one.welcome': 'Welcome to {domain}!',
-  'onboarding.page_six.github': '{domain} runs on GlitchCafe, which is based on Glitchsoc. Glitchsoc is a friendly {fork} of {Mastodon}, and is compatible with any Mastodon instance or app. GlitchCafe includes Plural Cafe-specific additions to Glitchsoc. Glitchsoc is entirely free and open-source. You can report bugs, request features, or contribute to the code on {github}.',
+  'onboarding.page_six.github': '{domain} runs on Glitchsoc. Glitchsoc is a friendly {fork} of {Mastodon}, and is compatible with any Mastodon instance or app. Glitchsoc is entirely free and open-source. You can report bugs, request features, or contribute to the code on {github}.',
   'settings.auto_collapse': 'Automatic collapsing',
   'settings.auto_collapse_all': 'Everything',
   'settings.auto_collapse_lengthy': 'Lengthy toots',