Fix resolution bug and update event modal template.

Updated event modal add/edit template to choose type first,
then value with JSON data. Fix resolution placeholder bug.
Update folder creation with id.

Update folder creation where user can creata his own id.
Update add channel with id.
Update Backbone.Pryv version.
Update event grid to show all records.

Update the event grid to show all records no the first 20 records.
Merge pull request #41 from pryv/jaison

Update Explorer functionality.