Gallery2: CS translation

- added 20Mpx resolution
- fixed decimal separator (Czech did not use dot)
- added 18 and 8.2 Mpx resolutions

Change-Id: I1a1e702e447875a4ca4fd7e311d5975492e1de99
Gallery2: SK translations

Change-Id: Id5b1737250575e9a78e019179cf96b9259e47518
Merge "Gallery2: SK translations" into cm-10.2
Merge "Gallery2: CS translation" into cm-10.2
Gallery2: UG translations

Change-Id: I7e063c7fe7189412d166f70b0133b4cb946b96be
Merge "Gallery2: UG translations" into cm-10.2
Merge branch 'cm-10.2' into martincz