Fixes #18 : Reworked the textures for the GUI to give more text space.
Fixes #14 : Added a home button.
Fixes #16 : Added a font size multiplier to the config file.
Fixes #5 : Implemented an IMC handler to allow other mods to register.

Currently this is limited to registering an index page for the mod which
will then show up in a global index page.