TweetListEntry: Delete tweet on first try...

... if the user's been using the menu item
list-list-entry: Set the description's x-align to 0

Fixes the jumping label when resizing the window
Use individual titles for each page
DMPage: Fix window title
ListStatusesPage: Fix window title
pot update
Update POTFILES.{in,skip}
Merge branch 'master' into main-widget

Conflicts:
	src/MainWindow.vala
	src/SearchPage.vala
	src/TweetInfoPage.vala
	src/list/DMListEntry.vala
	src/list/TweetListEntry.vala
	src/list/UserListEntry.vala
	src/util/TweetUtils.vala
MainWidget: Set the window's title here
DMPage: Focus the text entry on_join
build: Set clang-specific build options only for clang

Fixes #172
TweetUtils: Don't create widgets in a separate thread

Could possibly lead to a segfault
ProfilePage: Use GMenu
ProfilePage: Disable the appropriate actions
ProfilePage: Implement user blocking again
ui: Move from margin_{left,right} to margin_{start,end}
ui: Move from margin_{left,right} to margin_{start,end}
Merge branch 'gmenu2'
Add examples directory
Move CSS loading stuff into Utils