Fix handling of Topic messages.
Handle Topic messages in ChatFragment and assign them the same formatting as in the regular Quassel client.
Make Quit messages have the Quit text color for messages and nicks.
Looks like someone copy-pasted and forgot to change one of the instances.
Add "[]" around the nick in NOTICE messages to match the formatting used by regular Quassel.
Properly parse, format, and display netsplit messages.
Merge pull request #128 from mamarley/chatfragmentformatfix

Various formatting fixes for ChatFragment.java.