Add ability to edit entities
Refactored wui.dialogs.addProperties for editing
Allow unsetting properties
Fixed checkboxes not honored (http://stackoverflow.com/questions/901712/check-checkbox-checked-property-using-jquery)
Fix middleware error when adding group with children to aggregator
Undo part of .attr -> .prop change
Make optional properties more readable
Restructured and harmonized frontend display of entity properties:
- UUID/middleware are always first
- then required properties (default required are first to make sure Title is always at first position)
- then optional properties (default optional are first)
- optional properties have been reordered to have all display properties together
Merge pull request #117 from andig/sanitize-property-display

Beautify frontend display of properties
Merge pull request #111 from andig/fix-move-aggregator

Fix middleware error when adding group with children to aggregator
Merge branch 'edit-entities' of https://github.com/andig/volkszaehler.org into andig-edit-entities
Merge branch 'master' into dev