updates
- added translation wrapper for constants (this should allow easier translation if needed in the future)
- refactored main controller out of pop-up dialogs. now all dialog should only process and
  return given attributes/values.
  this concentrates calls to controller to only main widget/windows
- added include modifier to MS leaf view. now use can show actual distribution with modifier applied
- multiple bug fixes
updates to core
- adjustments to taxonomy classes
  - new parsing method, only return parsed elements
  - new property to default attribute values
- adjustments to mapping scheme/statistics
  - generate statistic tree for only given attribute values
  - generate statistic tree using attribute values from all levels instead of
    just using level 1

updates to UI
- new input UI for modifiers (possibly applicable for MS branch input)
- new build MS dialog box, allow removing attributes when creating mapping scheme
- display grid around exposure points in preview tab

updates to test case
- minor updates to MSTestCase for consistency (not done yet)
multiple bug fixes
updates to test case
- added SIDDTestCase to perform common initializations
- fixed issues with test cases

multiple bug fixes

updates to files
- remove reference to GPL in copyright text at top of each file
resolved conflict in merged branches