Recommendation Tracker Code

+ implemented ordering on subgroups

+ Added support for ordering rules within a group

Use StringIdComparator for id.
Fix for bug 3035941.

Fixed spelling error in Remove button tooltip.

Set the tooltip of the remove button to tell the user that the button is disabled because the element is inherrited from another profile.
Prompted by bug 3029524.

Added checks for both rule and group dependencies before deleting a group. These are reported to the user and the user can't delete.
Added checks for group dependencies and profile references before deleting a rule (a rule dependency check was already there). The user can't delete the rule if such references exist.
Fix for bug 3028624.

+ fixed a null pointer exception that occurred when displaying potential rules to place in a group
+ removed unnecessary cast in EscapeExec

New version of spell checker

Added spell check to HowTo
Fix for bug 3026453.

Moved question import in Group to correct place.
Added question import to Recommendation.
Prevent empty SelectGroup and SelectRules in Profiles. (Don't know why xsl was adding more of these elements than there were in the original.)
Leave out selectorId from RefineValue if that's the way it is the Benchmark.

For bug 3030564 - Re-importing exported xccdf causes crash.