GCI2012 - In-Game Chat Commands

Google Code-in: Move video preferences in settings tab Moves the video recording preferences out of the video recording page into their own tab in the settings page. https://google-melange.appspot.com/gci/task/view/google/gci2012/7968230

GCI2012: Command Line Parsing

Google Code-in: Center help text field Modifies the grid layout slightly so that the help text which appears when hovering over certain elements is centered with respect to the window, even when there are more buttons on one side. https://google-melange.appspot.com/gci/task/view/google/gci2012/7968226

use the correct symbol

Use same macro for hiding video record button and keybinding Modified my previous patch to use the already-in-place VIDEOREC macro (used previously just for hiding the button on the main menu) instead of creating another one. https://google-melange.appspot.com/gci/task/view/google/gci2012/7948213

GCI2012: Lowercase CMake functions (main files only)

Move global variables to units that use them

Google Code-in: Hide "video record" keybind option Removes the recording keybinding option using preprocessor conditions when it is unavailable. This includes when Hedgewars is being built either with the recording feature explicitly disabled or when FFMPEG/LibAV were not found. https://google-melange.appspot.com/gci/task/view/google/gci2012/7948213

Remove unused global variables