Audio Switcher: Exhibit all audio tracks available.

The "Play > Audio" menu now includes all the embedded tracks exhibited by the source filter and the external tracks.
Enable WMA decoding with internal LAV Audio Decoder in low merit mode.

The internal LAV Audio Decoder isn't registered to handle the WMA format since the system decoder is preferred. However if for some reasons no other decoder is available we can let LAV Audio Decoder handle WMA as a low-merit decoder.
Updated French translation.
MainFrm: Immediately jump to rtStart if the favorite item is already loaded.
Web interface: Don't use HTML entities in Javascript code.
Fix remember file position when double-clicking on a playlist item.

If a position was previously saved, it will be restored unless the file is already playing.

This commit fixes #3304.
WebServer: switch to HTML5 and add normalize.css trimmed down to our needs.

Notes:

* seekbarchleft and seekbarchright width in player.html is set via js
* only controls.html isn't valid HTML5
* switch to Arial font
Use font-size:0 for #seekbar td.

This fixes a visible white line showing below the seekbar.
Use pre for the debug section.
web/info.html: document where the mpchc_np id is used.
Update controls.html.

* use lowercase method "post"
* make the reloadenabled checkbox centered
* move inline style to default.css
WebServer.cpp: no caching for css files.
controls.html: Add title to some buttons to clarify their purpose.
Merge pull request #96 from XhmikosR/webserver

Webserver
src\thirdparty\VirtualDub\system\system.vcxproj.filters: Remove non existent file.
Update Changelog.txt.
moreuuids: Add GUID defines for common subtitle renderers

Adds VSFilter (auto-loading version) and XySubFilter's GUIDs as
defines into moreuuids.h.
AppSettings: Utilize the VSFilter define

Magic strings begone!
FGManager: Block VSFilter when XySubFilter will get used

This is generally a rude solution, if it can be called such.

In the future the amount of things in the check might have to
be adapted depending on the implementation of MadVR's subtitle
interface.