fix(typo): Utils.SafeString should be Utils.safeString

- wrong case on method was causing glob directive to break
- also fixed same issue in HTML.nl2br
- added glob test which illustrates before and after issue
- no html tests exist, so none added
- note that there were 4 markdown functionality related test failures (‘grunt test’) before edit, and they still exist. this PR does not address those issues.
feat(globRaw): added globRaw, globRawWithContext to omit Utils.safeString(source)

- Without this edit, trying to glob a .json file will throw an error because Utils.safeString trys to perform string operations on an interpreted object.
- If there is a better way to do this, please let me know (I’ve tried a few of the other data/file operators) and ignore this PR. Thanks.
Merge pull request #90 from jfroom/master

fix(typo): Utils.SafeString should be Utils.safeString