[Glitch] Change routing paths to use usernames in web UI

Port 52e5c07948 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/compose/components/header.js

@@ -87,7 +87,7 @@ class Header extends ImmutablePureComponent {
           <Link
             aria-label={intl.formatMessage(messages.home_timeline)}
             title={intl.formatMessage(messages.home_timeline)}
-            to='/timelines/home'
+            to='/home'
           ><Icon id='home' /></Link>
         ))}
         {renderForColumn('NOTIFICATIONS', (
@@ -106,14 +106,14 @@ class Header extends ImmutablePureComponent {
           <Link
             aria-label={intl.formatMessage(messages.community)}
             title={intl.formatMessage(messages.community)}
-            to='/timelines/public/local'
+            to='/public/local'
           ><Icon id='users' /></Link>
         ))}
         {renderForColumn('PUBLIC', (
           <Link
             aria-label={intl.formatMessage(messages.public)}
             title={intl.formatMessage(messages.public)}
-            to='/timelines/public'
+            to='/public'
           ><Icon id='globe' /></Link>
         ))}
         <a