Merge pull request #247 from BlythMeister/MyBetaVersion

Fixes for #95, #244 and #243
Fix endless loop of App.net message retreival by manually setting feed as fully refreshed.
Merge pull request #249 from Fammy/feature/issue-66

Feature/issue 66
Fix for #248 change the conversation drop down on light with dark theme
Fix for #250 to prevent an out of memory killing the app when getting tweets, it's now handled and the error message is set so as to flag the fetch as errored.
Finish off work on #217 with glowing buttons & toasts on main timelines