add short note on PILBackgrounds
replace loadURL overrides by onGenerateRequest
onGenerateReq: allow non-std. URL parameters
js: new algorithm to update main navbar changes

…plus other minor things.
Details:
- handlePlexConnectNavbar.js: extracted from utils.js, new function
reloadNavbar() to handle/double check onVolatileReload (updates main
navbar in place, no need to exit nor double-navbar quirks)
- settings.js: removed atv extensions (rely on utils.js), “spinner”
during sign out, support new navbar handling
- trailers.js: extracted from utils.js
- updateXML.js: removed atv extensions (rely on utils.js)
- various .xml: adapt scripts in use
- PlexConnect.xml: define volatile, rely on handlePlexConnectNavbar.js
to figure out what to do…
quick fix: syntax error in a onPlay event
Update gitignore for VS Express
gitignore suo files and fix line feeds
Remove 'PILL not installed' message from PILBackgrounds.py
upload new POT files (localization), release V0.5
github missed two files?
extend {{URL}}, rework {{PLAY}} parameters

- new options for {{URL}}: key:dflt:addPath:addOpt to work around the ?
vs & issue
- {{PLAY}} parameters divided into own strings: PlexConnectPlayType,
-RatingKey, -CopyIx to help with “url-ratingKey” in the long run…

Not a big change program-wise, but it affects basically ALL our
templates. :-(
bump version to 0.5-dev
Added Tabbed List Channel view

+ Fixed bug in original Channel_List.xml
Option to blur lower portion of fanart images
Added Tabbed List PLaylist view
Forgot to cut empty tabs...

...only a problem if the first tab is empty, but cut all of them just to
be safe.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	ATVSettings.py
	assets/templates/PlexConnect.xml