Enable to remove channels even if not connected, fixes #73

  - Add notice if not connected to conversation.
  - Will reset connection state on startup
  - Fix typo "reconneting" for connection state.
Fix scroll to bottom on load
Add "external" and "autocomplete" classes to links in conversation
Fix selectize for channel list
Allow seeing notifications even though not in conversation list
Fix timestamp overlapping text
Try to prevent ws-reconnecting.js from going bananas

  In some cases it use 100%. At least in Chrome.
Fix unit tests