Vision2u Vision2

complete undo and redo for editing parameters in state, command and variable panels
Defect: VIS-56

Fixed export help function; update Undo and Redo icons.
Defect: VIS-56

fix issues and drop down button for undo and redo
Defect: VIS-56

basic implementation for drop down button of undo and redo

early implementation of shortcuts for undo and redo
Defect: VIS-56

implement undo and redo for adding and deleting variables of Command. Add constant that specifieds max call stack.
Defect: VIS-56

implement commands for adding and deleting state variables.
Defect: VIS-56

implement ImportCommandTask and DeleteCommandTask. Refactor to use Delegate; implement rename command task + tooltip in undo and redo buttons.
Defect: VIS-56

implement undo & redo for new state task
Defect: VIS-56

implement delete state task, rename state task, undo and redo buttons on toolbar
Defect: VIS-56