(CE-75) Recent changes filter not respecting "All" preference

If you set the recent changes namespace filter from selected namespaces to
all, then visit another wiki with different namespaces, the differing
namespaces will be unselected. This is because the namespaces selected in
the dropdown are saved for the user rather than clearing the option to
get back all being selected properly.
Fix RecentChanges filter so it actually gets data from cache

RecentChanges filter always tries to get from cache, but the getCache
method doesn't actually return the data.
Disabled property should be set and unset with .prop()
Fix line endings
Correcting wfMsg usage to wfMessage
Merge branch 'CE-75' into dev