Java Application Framework For All Source

bug 15181 - Reverting the changes done via revision 4786. A new flag noMandatoryFlag need not be introduced. The aop file should be used to make the primary key OrderNo optional.

added object detection for controller for findDataSource method

After building the save model for a prevalidate, remove all GraphInSaveModels, otherwise old field values will corrupt the next save/prevalidate.

Convert step forward/back handler to functions so they can be overridden if required.

Fix service for export to excel

- the defaultType in Ext.create() should be xtype rather than constructor. Ext API was wrong.
- run the plugin that finds all the panels first.

Allow the modify button to be hidden if not required.

Added print() method for printing without a User Interface.

- allow editable background color to be determined on row basis
- add editable property on EditorGridPanel to turn off editable feature; a convenience for user permission toggle.
- add a red * on the column header if it is mandatory according to meta rules and editable to the user.

Close viewer if the transaction id passed in does not exist.