WebUI: use `filepatharg` in `onload` path.

Fixes #3296.
DVB: Fix accidentally removed line in
594935d8d533cb30d7cfcc7d186dee50a54c4af1 "Split PM_CAPTURE mode into
PM_ANALOG_CAPTURE and PM_DIGITAL_CAPTURE"

This might cause DVB mode to lock in certain cases.

Fixes #4178
EVR-CP: Fix a jump few frames ahead when pausing the video after seeking.

The issue was introduced in 5b803b86b2b7fe138f76e65712664e466870ce97.

A forced repaint was sometimes triggered because of a flush but the renderer was unpaused before the redraw happened and it was delayed until next time the renderer was paused.

This commit fixes #4182.
CVobSubImage: Initialize all member variables in the constructor.

The variable was never accessed before being initialized but better be safe.

Fixes CID 966378.
Update translations from Transifex:

 - Croatian
 - Japanese
WebUI: Inform the web interface that no audio stream is available.
WebUI: Make use of new [hasaudio] info.
Fix some CPPCheck warnings or mark them as intentional.
What the hell was intended here?!

Trying to make some sense of that code. Without much luck so far...
Fix: x86 and x64 versions conflicted over file associations.

4f465cf8b81f1da800b1bfc57cc48e317d24fbb5 was incomplete for Vista+.

This commit fixes #4064.