Work in progress on Tasks framework.
More WIP: logging, exception handling, etc.
More WIP: cleaning up a bit, "are you sure" dialogs
WIP: Work on Undo/Redo infrastructure for app.
More WIP: add commands for actions to facilitate undo/redo
WIP: Refactor selections and current line logic; add toolbar.
Add license file for icons.
Add link to license text.
Clean-up.
Merge pull request #5 from twdb/feature/survey-data

Application Framework and Survey Data Pane
Merge branch 'master' into feature/depthview-integration
Fold survey line view into Task.
Update survey line view when survey line is updated.
Merge pull request #14 from twdb/feature/depthview-integration

Tasks Intergation of Depthview