Started major refactoring. There are now popup panels used for config and selecting/deselecting students.
Updated linking to class folder, to work with folder name instead of folder ID.
Updated how new email templates are created. Now much prettier, and file ID is stored in the proper way.
Cosmetic updates to the 'add new e-mail template' message.
Updated routines for creating new matrix template. Much prettier, and now stores the settings in the new nicer way.
Improved message upon creating a new matrix template.
Changed to version 2.0. Improved help message a bit.