Updated Swedish translation

A lot of fixes, full translation, proper Swedish
Merge pull request #174 from EyesX/master

Updated Swedish (sv_SE) translation
French translation update - new strings
Merge pull request #175 from RaphaelRochet/master

French translation update
ccache: do not force recalculate child counters on category upgrade because this is handled elsewhere
update: set last_updated to now() when process starts
Merge branch 'master' of github.com:gothfox/Tiny-Tiny-RSS