Add a new simple settings system/UI

Add a new simple settings system/UI

This new system replaces the old simpleModeSettings system and the materials/profile
ini system implemented upstream. The new system uses a more dynamic aproach
with profiles being dependent on the material instead of being separate
entities.
The hierarchy is :
option_<option name>.ini *
<material>/profile.ini **
<material>/option_<option name>.ini ***
<material>/<profile>/profile.ini

* This is for global options that affect all materials
** The profile.ini file represents the material itself
*** These options are specific to that material

The profile.ini file can contain a [profile] section to override default
profile settings, the profiles settings are loaded in this order :
material -> profile -> options
This allows a specific quality profile to override material profiles and
specific options can override everything else.
All profile.ini and option_*.ini files can also contain a [info] section
which can contain the following keys :
name = The name of the material/profile/option
disabled = 1/0 Whether or not to disable (not show the material/profile/option
               in the UI) this profile
default = 1/0 Whether this is the default material/profile to select
              This is only valid if the user has no valid saved selection
always_visible = 1/0 Whether or not to display the material/profile selection
                     in the UI if this is the only available material/profile