alarm objects updated:
- alarm objects now supports type definition
- new fields in alarm object
- frontend location module updated
- alarm creation in frontend support alarm object selection
- new database revision added
closes #2
Merge branch 'master' of https://github.com/seiferta/eMonitor into help_system
help system for admin area added:
- help area in admin-template added
- existing modules extended with admin help texts in german
- new area /help/admin/* introduced
- new python module Markdown needed for markdown templates
 closes #4