Uses SexLabUtil.HasKeywordSub
Some minor correction

These corrections should be merged to the master. Don't merge the new
functions, delete them. They will be rewritten.
Removed experimental functions

Has corrections for the master branch. Will merge.
Merge pull request #3 from heromaster/Development---stripping-function

From: Development - stripping function
Merging: some corrections to the evaluation function & changed the ItemHasKeyword to use the SexLabUtil.HasKeywordSub SKSE function.