expanded whitelist and mime-type mapping to allow uploading of all MS Office file-types in this universe and the next. refs #3166
added mimetype mapping for .docm and .dotm file extensions. refs #3166
added a bolshoi number of alternative mime-types to match the nonsense that mime-"magic" is detecting.
kludged icon display for learning materials with incorrectly detected mime-types. refs #3164
Merge pull request #53 from ucsflibtopfstedt/feat3166

expanded filetype whitelist for learning materials uploads
mv tests to phpunit dir in preparation for adding other types of tests to tests directory
remove excluded file
modify .gitignore to exclude phpunit.xml in correct directory
Update comment
Merge pull request #54 from Trott/ilios-tests

move tests to phpunit directory in preparation for adding other types of tests