Added lithuanian keyboard layout

[favourites] handle pictures via showpicture builtin

Wasapi: Do not probe for AE_FMT_AAC - we don't passthrough it anyways

[pvr] fix trac #15942

[pvr.mythtv] Bump add-on to 2.4.0

currently active PVR client is determined in
CPVRGUIInfo. Instead of querying the current
client directly we ask CPVRClients to give us
a summary (SBackend) of each connected client.
These summaries are safe to loop over no matter
what happens to the actual clients in the mean
time. Fixes trac #15942

[pvr] [libplatform] Bump pvr add-ons and libplatform

[gitigonre] Another android artifact

FIX: [droid] limit 4K to Shield TV + allow override

[pvr] fix CPVRChannelGroup::OnSettingChanged won't get called

CHG: [droid] add external storage path to initial status log

- Some devices (Sony Android TV) suffer rendering GUI in 4K; only Shield
TV is known to work fine.
To be reverted when multi-surface (vid + gui) is in place
- Allow override via xbmc_env.properties, e.g.
xbmc.display-size=3840x2160

[pvr] sort equal client channel numbers by name if not sub-channels

[pvr] fix: delete of empty group with an invalid id ends up in deleting the wrong group

[pvr] bump add-ons to their Isengard branch

[videodb] fix yet some more query typos

FIX: [droid] fix crash when restarted by system

If client channel numbers are used for ordering the channels and you have more than one backend, it's possible that you end up with different channels holding the same client channel number. In that case the channels are sorted by its sub channel number which is zero for normal channels. To have a nicely sorted list this changes extends the comparator to compare the names of the channels in case there is no sub-channel number.