1st step for editing add-on information by user (currently works with jade 1.1.5 only - jade 1.2 must be fixed)
add-on feature refined
submit buttons in forms are now on top and bottom of the page
Merge pull request #622 from leider/master

submit buttons in forms are now on top and bottom of the page
Merge branch 'master' into nicoleactivity
Introducing a mixin for the submit buttons.
Member edit form now also has buttons at the end.
Adding some space at the page bottom.
Merge pull request #623 from NicoleRauch/master

ui tweaks
configuring add ons now inside the activity edit form
Merge commit '300a61694d85467e2ab838bdcadcf8bb25216214' into nicoleactivity

Conflicts:
	lib/activities/views/edit.jade

renamed addOn.jade to addon1.jade (interim)
rename complete from addOn to add-on
introduced AddonConfig prototype and renamed fields
showing add-on button only to registered members
introducing tabs on activity edit page
fixing display for guest viewer
updated jade to 1.3 (fixing the mixing bug)
Merge pull request #624 from leider/master

updated jade to 1.3 (fixing the mixing bug)
layouting
checking mandatory fields in frontend