added new report settings to phoebe/ross
added reports persistence to Joey
field not needed on ReportsPageFragment
time period removed from setting store
fixed ISettingsStore on test with new properties
rebased from master and some imports organized
move save ZoomLevel to setter
save ZoomLevel enum using int and not string
Merge pull request #433 from toggl/anton-reportsviewpersistence

Reports zoom level and period persists app restart. closes #415