Updates to module definition and template files.

Removed EntityReference dependency. 
- remove dependency in info file

Module Updates
- updated to field bases and field instances to utilize built in body field type in place of custom 'description' fields
- updated ev lib file for parent tool lookups without entity reference requirement

Updated Template Files
- Added EV Tool Edit template file
- Updated EV Tool Instance template file to no longer utilize EntityReference.
- Replaced description fields in Tool and Tool Instance with body fields
Merge branch 'removeEntityRef'