[epg] handle <onback> just like every other control
[pvr] no need to handle ACTION_NAV_BACK and ACTION_PREVIOUS_MENU in GUIWindowPVRCommon - they're handled in GUIMediaWindow already
[pvr] only handle ACTION_NAV_BACK in GUIWindowPVRRecordings if there's a parent directory to go to, else drop down to the base class as the action will be handled by the window system
CharsetDetection: add ConvertHtmlToUtf8() and helper functions
ConvertHtmlToUtf8() detects HTML charset and convert HTML to UTF-8
CharsetConverter: add systemToUtf8
CharsetDetection: add "ConvertPlainTextToUtf8()"
FileUtils: add file type detection based on Mime-type
ScraperUrl: detect and use charset even if web server don't report it
[Fix] CStreamDetailSubtitle::IsWorseThan claimed to consider the user's preferred language but actually didn't.
[rbp/omxplayer] Handle mono playback of HSBS/HTAB videos
[rbp] Avoid resizing 1080p fanart

Currently all re-encoded jpgs are resized to multiples of 16 widths and heights.
This causes additional blurring, especially for 1080p (which becomes 1088), as well as subtle aspect ratio errors.

Remove the alignment clamping, and fix up the heights/strides where needed
[rbp] We require the pixels in non-reencoding texture caching

If the direct texture reencode path fails, we do a seperate jpeg decode then encode path, which always fails as the pixels are not available.
Make sure we set the require pixels flag in this case
[Confluence] smaller select dialog when button is not visible
Merge pull request #3968 from popcornmix/require_pix

[rbp] We require the pixels in non-reencoding texture caching
Merge pull request #3958 from jmarshallnz/epg_nav_back

[epg] handle <onback> just like every other control
Merge pull request #3796 from Karlson2k/html_charset_detecton_01

Properly detect HTML charset even if not reported by server
Merge pull request #3969 from popcornmix/resize_align

[rbp] Avoid resizing 1080p fanart
[configure/airtunes] - fixed typo
[configure/airtunes] - fix fallback to libshairport if libshairplay can't be found. Bail out if --enable-airtunes was given and none of both libs was found.
[settings/ios] - fixed some errors in settings parsing due to mismatches in darwin_ios.xml