tweet-list-entry: Dont show the conversation_image no show_all
Remove obsolete files
Corebird.vala: code style
MainWindow: Clean up the headerbar mess
Corebird.vala: Add value to the --tweet parameter
TweetListEntry: Delete tweet on `dd`
Corebird.vala: Add null entry at the end of our cmd options

To prevent a crash on 32 bit systems, see
https://bugzilla.redhat.com/show_bug.cgi?id=1045532
Merge branch 'master' into lists
ListStatusesPage: Reset the MaxSizeContainer
MainWindow: Add get_page method

So we can query data from other pages.
MainWindow: Fix get_page
Add UserListDialog

... which will be used to add/remove a user from a list.
UserListDialog: Retrieve the ListsPage
UserListDialog: Show list of lists