Undo and consequent Redo of commands which manipulates context entries (basically all) for non trivial scenarios does not update user interface correctly.

In the steps for reproduce used AddRuleCommand, but generally it can be reproduced with any command.

Acceptance test

Prerequisite

1. Prepare decision node that has context table as top level expression
2. Add all expression types into this context table
   1. Function, Decision Table, Relation, Invocation, Literal expression, Context
3. Save and reopen

Test

1. for each expression type
   1. execute command
      1. Literal Expression: type value
      2. Context: adding entry, deleting entry
      3. Decision table: change hit policy, add / remove input, add / remove output, add / remove rule, rename header cell, change data cell
      4. Relation: add/remove row, add/remove column, change cell value
      5. Function: change language, add/remove parameter, rename parameter, change cell value
      6. Invocation: insert/remove parameter, change cell value
   2. undo two times (to return into DRD)
   3. redo two times (the original command should take effect)