Don't mix up total tracks and total discs when reading vorbis comments

Conflicts:
	src/CHANGELOG
Add Catalan, Swedish, Chinese (Taiwan) and Romanian translation
Update version number
Merge branch 'fixes-2.0'

Conflicts:
	src/CHANGELOG
	src/metadata/tagengine.cpp
Fix remembering codec widget options when switching between codecs
Fix compiler warnings
Update version number & translation template