Migrated to new editor utils model

This removed the 84% bottle neck in the unit test process.
Ported rest of tests
Insert commands only rebuild when setting changes

Previously insert mode would rebuild its commands whenever any setting
in the system was updated (changed or not).  This was taking up ~20% of
the time during suite runs.  The code was switched to only rebuild when
the pertinent setting was changed
Fixed a memory leak issue
Merge pull request #1408 from jaredpar/fixes-test-perf

Fixes test perf