* Removed some legacy files that were
compiled, but not used anywhere.
* Cleaned-up ImageManager and
FontManager implementations, trying
to use RAII wherever possible.
* Fixed minor bugs in Font.cpp
implementation.
* Removed unused includes.
* Other minor cleanups and refactors.
Fix AM/PM font on one of the home screens, change it to normal size/
Fix type of FontInfo members representing spacings, chane them to signed
integers.
