Added min/max zoom levels to all maps
Added undo button to analysis view
Fixed validation admin titles
Added polygon drawing undo to validations
Do nothing on :active undo button
Merge branch 'master' of github.com:unepwcmc/BlueCarbon

* 'master' of github.com:unepwcmc/BlueCarbon:
  progressive display of form info is broken
  Reintroduce Evidence type to Validations
  Reintroduce Evidence type to Validations