Now uses the same as in the deck editor

+ Removed unused buttons
+ remade button art
+ fixed crash with font colors/replays
+ removed unused timestamp label in replay

Buddies will now be seen as stars in the chat

From https://github.com/joielechong/iso-country-flags-svg-collection.
(States that flag images are public domain)

Added translation of some new strings and svg file of South Korean flag.

Flag of South Korea is from
http://commons.wikimedia.org/wiki/File:Flag_of_South_Korea.svg

Please note that I don't feel that the search bar needs to be skinned by
users, hence why it is not part of the large css-skinning project. I
also feel that given the PR #416 a new search bar with highlight the new
search functionality.

Updated the look of the search  bar:
+ larger, curved edges
+ changes color when has focus
+ search icon built into search
- removed "Search For" text in lieu of search icon

Removed some unused resource files.

added option to ignore unregistered users in chat; switched UserList data storage to QMap to speed up lookups; issue #28 fixed