Settings: slightly adjust PIE default values

to fit frameworks base change

Change-Id: If213abd25744472c5d2f93a2b146dae6c12f4017
Settings: dslv do not allow to add recent, home, back main action twice

to have it twice causes problems on navbar pie and wherever in future
home, back, recents is used when the system disables this buttons and
more then one per feature exists. Due that a user do not set eg
2 home buttons on navbar let us block it and give the user a hint
that this is not allowed. All other actions can be added twice

Change-Id: I729d166139403e65b948f45acf36a47b7de7eb4c
Fix USB settings title

Change-Id: I8aed549a7aa9b6f9608144eb06357033eca31756
Settings: add back dev options countdown toast

Change-Id: Ifb54e3faa80adba5cfdf4f5246fb5a8fce0d07ad
Merge branch 'slim-4.3' into jb43
Settings: fix Chinese translations