Moved styling into own CSS

This cleans up the markup by a great degree, to make it more maintainable with proper CSS-styling.
Refactored MailingJob

- Better readability and maintenance
- Better error handling
- Mark more settings as dynamic
Refactoring of jobs

- Made more settings dynamic and...
- ... marked settings as dynamic which weren't
- Adjusted some code to guidelines
- Improved readability and maintainability
Refactoring of eAlarm

- Made more settings dynamic and...
- ... marked settings as dynamic which weren't
- Adjusted some code to guidelines
- Improved readability and maintainability
Refactoring of PushJob

- Made more settings dynamic and...
- ... marked settings as dynamic which weren't
- Added new setting: "Header"
- Adjusted some code to guidelines
- Improved readability and maintainability
- Better error handling
- Fixed possible memory leaks
Minor refactoring of Website
Refactoring of Geocoding job

- Adjusted code to guidelines
- Improved readability and maintainability
- Corrected spelling errors
Refactoring of OperationPrinter

- Better error handling
- URL-Encode parameters for Google
- Adjusted code to guidelines