CMFileManager: Update Polish language

PS2: Deleted all comments
PS3: Added latest strings, fixed missing strings
PS4: Minor fix

Change-Id: I7f41dc4fd4adc338c80037a75307748cc8ac17d6
Merge "CMFileManager: Update Polish language" into cm-10.1
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_packages_apps_CMFileManager.git into cm-10.1