Fixed #114: Editor labeling
Session timeout: increase idle TO to 6h and session TO to 24h

Closes issue #126
Fixed #121: Message "abstract saved" always shown
Merge pull request #128 from gicmo/sessionTimeout

Session timeout: increase idle TO to 6h and session TO to 24h

OK
Merge pull request #129 from stoewer/master

Fix editor labels and "Ok"-message

LGTM
Fixes #115: Figure remove figure name
Merge branch 'andrey'
Merge pull request #130 from stoewer/master

Figure remove figure name
Merge pull request #131 from asobolev/master

topic selection via radio buttons (fixes #123)

LGTM
Conference owners and admins can edit abstracts

Owners of a conference can update and delete abstracts
Admins can update and delete abstracts

Fixes #119
Conference creation restricted to admins
Admins can edit and delete conferences.
Merge pull request #132 from stoewer/master

Account for admin permissions
[model] Add a PositionedModel as a base class for sorting

Sorting is done via the pos (integer) field
[model] Topic is now a PositionedModel
[serializer] +PositionedListReads (implicit) with 'addPositions'

The addPositions method can be used to set the pos field of the
PositionedModel via the ordering of the List.
[serializer] Conference.topic: call addPosition @ deserialisation
[serializer] Conference.topic: sort before serialisation
[views] template: Add jQuery UI and knockout-sortable [js]
[js/model] Conference.topic: don't sort, it is server-side sorted