Allow larger font size

This trick is useful for composite tvs. With the confluence stock fonts they are all very small and almost unreadable especially the movie descriptions.

Trick source: http://forum.xbmc.org/showthread.php?tid=127671
Added English string

ID #15110
Updated String ID & Identation

Updated String ID & Identation
Removed: defines for VOLUME_MINIMUM and VOLUME_MAXIMUM from ApplicationPlayer.cpp.
Already defined in Application.h, which is included by ApplicationPlayer.cpp
Fixed: Initialize CApplication::m_volumeLevel with VOLUME_MAXIMUM, not with
hardcoded numeric value.
[addons] adds OnEnabled/OnDisabled callbacks to save special-case stuff in CAddonDatabase

NOTE: still actually special-cased as combined add-ons could be disabled (e.g. service+plugin, where plugin
      is disabled should disable service as well).
[addons] adds GetRunningInstance() to CAddon, retrieving the running instance of the particular add-on, to remove special-casing from CAddonManager for PVR clients
[cosmetic] drop using namespace PVR from AddonManager
[addons] adds CanInstall() to CAddon to allow for non-install of add-ons by type rather than special-casing for PVR in CRepository
[addons] adds OnPreInstall/OnPostInstall callbacks for add-ons to remove addon type-specific code from CAddonInstaller
[addons] adds OnPreUnInstall/OnPostUnInstall to CAddon to get rid of addon type-specific code in CAddonInstaller
Allow CStopWatch to be queried when stopped.
Refactor CStopWatch for inlinability.
Clean up ambiguous usages of CStopWatch.
Update CStopWatch::Stop test
ScraperParser::Clean: use "UTF-8" instead of GetSearchStringEncoding() as everything is converted to "UTF-8" on input.
[rbp] Make gui limit default to 720 when memory is limited

On a 256M Pi, it's safest to default to 720p gui as memory is quite limited.
[osx] - for osx shortcuts look at the unicode character instead of the keysymbol if possible - fixes #15328
[pvr] fix open add timer dialog in timer window

After changing the special item 'Add timer...' to be a folder (to always
stay on top of the list) the path comparison fails, because the path now
ends with a slash.
StringUtils::FormatV: optimization: reduce default allocation size to 512 bytes as most formatted strings are small, replace malloc/realloc with simpler malloc/free