Phone: Reorganize German translation

Patch Set 1:    * move CyanogenMod addistions to cm_strings.xml
                * add translations for:
                    - Make going to call log after call optional
                    - Add Blacklist functionality
                    - Add option to mark user-rejected calls as missed

Patch Set 2-3:  * move over missing strings

Patch Set 4:    * add missing string
                * fix some typos and rename some strings
                    - 'Schwarze Liste' -> 'Sperrliste'
                    - 'blockiert' -> 'abgewiesen'

Patch Set 5:    * add missing strings
                * rename and shorten some strings