DMThreadsPage: Use a normal ListBoxRow for the new conv. entry
Remove unused methods
Twitter.vala: Remove unused comments
Utils: Remove encode ()
Utils: Use the DATADIR to load icons
Update DM stuff

(Lost track about all the changes, meh)
Use since_id parameter for dm retrieval
DMThreadsPage: Only load dms with id > max_id
SelectStatement: Print sql string on if prepare fails
SettingsDialog: Remove the behavior tab

What was that even about?
SelectStatement: Add where_eqi
Improve direct messages
DMPage: Implement DM sending
account-info-widget: Make always-notify-switch insensitive
DMThreadsPage: Don't wrongly increase unread_count

If the received messages was sent by the user itself, well, he
probably already knows that he sent it, and he also knows its content.
DMPage: Check message length, add entry directly. etc.
DMListEntry: Load avatar
DMPage: Load Avatars + Don't try to send empty dms
user-list-entry: Remove 'show profile' menu item

That is already possible by just activating the item.
ComposeWindow: Fix tweet sending