RSX method naming modified

GCM commands (e.g. cellGcmSet*) are not the same as RSX methods (e.g.
NV4097_*). The name has to be changed.
Removed "Boot game and start" entry

There is already a setting on the menu (Settings > HLE > Always start
after boot) to do that. Make it active by default since disabling it is
only useful for debugging purposes.
Minor fixes and changes
Merge pull request #593 from DHrpcs3/wip

GUI and RSX updates