refactor(hintLog): update different severities of hintLog messages

Taking advantage of the new severity categories, messages are now categorized by severity.
Severity 1 errors: using ngView without ngRoute, loading undeclared modules, multiple uses of ng-app
Severity 2 warnings: creating and never loading modules, creating multiple modules with same name
Severity 3 suggestions: namespaces that do not adhere to best practices

Closes #12