Kick/Ban Reasons

My second attempt with predefined kick/ban reasons, this time with GUI where user can add/edit/remove own reason. Reasons from this list are used when user leaves kick/ban dialog empty.
Feature is disabled by default.

To dD0t: When yours ban editor will be ready you can easily move this to it. (and thanks for help with SAVE/LOAD)

Preview:
![kickban](https://f.cloud.github.com/assets/521035/1231595/dccd8024-2862-11e3-9743-d7cb412577ac.png)