IsISO639Language: Fix a memory leak detected by Coverity.
Internal filters page: Add buttons to access filters properties.
WebClientSocket: Fixed case where return value of AsyncReader::Length() was not checked.

As reported by Coverity in CID 1084352.
Change PPageFileInfoDetails for consistency.
Audio switcher settings: Fix the spinner not being correctly disabled.

This commit fixes #3428.
Properties dialog: Disable the "Explore to" feature when the file isn't local.

This commit fixes #3440.
Playlist menu: Disable entries that don't make sense for non-local files.
Updated German translation.
player.html: remove width completely.

It's handled in JS.
Enable per-monitor DPI-aware on Windows 8.1.

Fixes #3356.
temp
Use VS2012 as the default for the builds.

No files are renamed or removed at this point; we'll do this after 1.7.0 is out.
build.bat: tabs to spaces.