compose-window: Specify loading stack transition
pot update
DMThreadsPage: Use collect object
DMThreadEntry: Remove unused avatar_path field
tweet-info-page: Remove explicit viewport
profile-page: Remove explicit viewport
profile-page: Remove unnecessary empty label
DMThreadsPage: Only save messages if there are new ones
Utils: Remove support for custom css file
Rename verified images
assets/Makefile.am: Don't install verified images
app: whitespace
DMThreadsPage: Don't call save_last_messages twice
Add hidpi versions of the verified icons
AvatarWidget: Use hidpi verified images
AvatarWidget: Remove leftover ||true condition
Add hidpi version of play icon
MultiMediaWidget: Support hidipi play icon
Twitter: Don't load verified icons

We don't install them anymore.
Utils: Remove debugging output