Rename "the whole known network" timeline to "federated timeline"

Remove note about following Gargron@mastodon.social from getting started text

app/assets/javascripts/components/features/getting_started/index.jsx

@@ -45,8 +45,7 @@ const GettingStarted = ({ intl, me }) => {
         <div className='static-content getting-started'>
           <p><FormattedMessage id='getting_started.about_addressing' defaultMessage='You can follow people if you know their username and the domain they are on by entering an e-mail-esque address into the form at the top of the sidebar.' /></p>
           <p><FormattedMessage id='getting_started.about_shortcuts' defaultMessage='If the target user is on the same domain as you, just the username will work. The same rule applies to mentioning people in statuses.' /></p>
-          <p><FormattedMessage id='getting_started.about_developer' defaultMessage='The developer of this project can be followed as Gargron@mastodon.social' /></p>
+          <p><FormattedMessage id='getting_started.open_source_notice' defaultMessage='Mastodon is open source software. You can contribute or report issues on github at {github}. Various apps are available.' values={{ github: <a href="https://github.com/tootsuite/mastodon" target="_blank">tootsuite/mastodon</a> }} /></p>
-          <p><FormattedMessage id='getting_started.open_source_notice' defaultMessage='Mastodon is open source software. You can contribute or report issues on github at {github}' values={{ github: <a href="https://github.com/tootsuite/mastodon" target="_blank">tootsuite/mastodon</a> }} /></p>
         </div>
       </div>
     </Column>

app/assets/javascripts/components/locales/en.jsx

@@ -25,16 +25,15 @@ const en = {
   "getting_started.heading": "Getting started",
   "getting_started.about_addressing": "You can follow people if you know their username and the domain they are on by entering an e-mail-esque address into the search form.",
   "getting_started.about_shortcuts": "If the target user is on the same domain as you, just the username will work. The same rule applies to mentioning people in statuses.",
-  "getting_started.about_developer": "The developer of this project can be followed as Gargron@mastodon.social",
+  "getting_started.open_source_notice": "Mastodon is open source software. You can contribute or report issues on github at {github}. Various apps are available.",
-  "getting_started.open_source_notice": "Mastodon is open source software. You can contribute or report issues on github at {github}.",
   "column.home": "Home",
-  "column.community": "Local",
+  "column.community": "Local timeline",
-  "column.public": "Whole Known Network",
+  "column.public": "Federated timeline",
   "column.notifications": "Notifications",
   "tabs_bar.compose": "Compose",
   "tabs_bar.home": "Home",
   "tabs_bar.mentions": "Mentions",
-  "tabs_bar.public": "Whole Known Network",
+  "tabs_bar.public": "Federated timeline",
   "tabs_bar.notifications": "Notifications",
   "compose_form.placeholder": "What is on your mind?",
   "compose_form.publish": "Toot",
@@ -46,7 +45,7 @@ const en = {
   "navigation_bar.edit_profile": "Edit profile",
   "navigation_bar.preferences": "Preferences",
   "navigation_bar.community_timeline": "Local timeline",
-  "navigation_bar.public_timeline": "Whole Known Network",
+  "navigation_bar.public_timeline": "Federated timeline",
   "navigation_bar.logout": "Logout",
   "reply_indicator.cancel": "Cancel",
   "search.placeholder": "Search",