Database schema for 0.2 release added

Fixes bug #1199063

Change-Id: I3b72ed9470490d9053b73716ecb6badbb9c4c52e
Help messages for savanna-api configs improved

Change-Id: I981b0283abdbceda05dbb362a15a2b3c4b75bec0
Merge "Help messages for savanna-api configs improved"