change links to github

frontend/src/components/Nav.tsx

@@ -105,9 +105,7 @@ export class Nav extends React.Component<{}, INavState> {
                                 </a>
                             </li>
                         </ul>
-                        fediverse.space is made by{' '}
-                            <a href="https://sunbeam.city/@tao" target="_blank">@tao@sunbeam.city</a>.
-                        The source code is available on{' '}
+                        The source code for fediverse.space is available on{' '}
                             <a href="https://github.com/brortao/fediverse.space" target="_blank">GitHub</a>;{' '}
                         issues and pull requests are welcome!
                     </p>

frontend/src/components/Sidebar.tsx

@@ -264,8 +264,8 @@ class SidebarImpl extends React.Component<ISidebarProps, ISidebarState> {
                 icon={IconNames.BLOCKED_PERSON}
                 title="No data"
                 description="This instance has fewer than 5 users. It was not crawled in order to protect their privacy, but if it's your instance you can opt in."
-                action={<AnchorButton icon={IconNames.CONFIRM} href="https://sunbeam.city/@tao" target="_blank">
-                            Message @tao to opt in</AnchorButton>}
+                action={<AnchorButton icon={IconNames.CONFIRM} href="https://github.com/brortao/fediverse.space/issues/new" target="_blank">
+                            Open a GitHub issue to opt in</AnchorButton>}
             />
         )
     }