update simplified chinese translation, shorter for filter, longer for help.

CC privious translators, please review it.
@JMsoft, @Tungstwenty, @jpeg729, @pyler, @tonymanou

@M66B, please wait for the contributor's response before merge (If you decide to merge).
Although I think its better than current translation, however, I think we should wait for response from other contributor.

For filter screen, it should be short and clear (So I short translation). Otherwise, small screen phone cannot display them (which is single line).
For help screen, it should have more details (So I add more details).

This commits fixes the wrong translation for `help_granted` (Not every restriction in xprivacy is through `AndroidManifest.xml`, for example, serial number, proc, build.prop, ... etc).