Improve MUC handling.
Add command "send" to add feeds to other JIDs.
Ad-Hoc: Add functionality to specify JId to commit actions on upon.
Add subscription preview upon adding a subscription.
Add project Jabber RSS Transport to bots list.
Add projects Psi and Psi+ to clients list.
* Remove HTML tags from titles.
Fetch:
* Handle all exceptions.
SQLite:
* Add more functions to handle new ad-hoc commands.
Ad-Hoc:
* Move all commands into a single module called command.
* Remove commands from client and component.
Documentation:
* Comment commands that are not available.
