1. fix raised exception error: closing pdf files in menuplan
2. factor out tokens in separate class named Tokens.
3. add mensa vonRoll to the weekply_updater_web script
4. rename scripts:
	weekly_updater_gesell.rb => weekply_updater_web.rb
	weekly_updater_general.rb => weekly_updater_pdf.rb
5. fix empty content in menus in htmlmenuparser
Merge branch 'master' of github.com:lexruee/MensaUnibe-MPC