* Change remote interaction dialog to use specific actions
Instead of just "interact", use different strings based on whether
it's a reply, reblog or favourite. Add explanation why the step
is necessary in the first place
* Remove obsolete strings
no_account_html:Don't have an account? You can <a href='%{sign_up_path}' target='_blank'>sign up here</a>
proceed:Proceed to follow
prompt:'You are going to follow:'
reason_html:"<strong>Why is this step necessary?</strong> <code>%{instance}</code> might not be the server where you are registered, so we need to redirect you to your home server first."