Updated Catalan translation.

Refs: #2408.
Blacklist Accusoft PICVideo M-JPEG Codec 2.1 since causes a DEP crash.

Newer versions of the decoder have a different CLSID and don't crash.
Cosmetics: add missing brackets and consistently use .0f instead of .f.
Some testing on SetAlwaysOnTop. (not working)
External filters: Use separate list for x86 and x64.