Merge pull request #7 from alexanderbazo/master

merging examinationRules with master
Added examination rules for Medienwissenschaft and Medieninformatik, added functions for subject list operations, added a documentation file
Merge branch 'examinationRules' of https://github.com/alexanderbazo/prolog_studienberater into examinationRules
Modified gitignore to ignore gedit backup files and removed a backup file
Merge pull request #8 from alexanderbazo/examinationRules

Examination rules