Empty fields in next of kin contact hides icon

Glyphicon for user, telephone and map is now hidden along with
paragraph if the field is empty
Add buttons and functions to change next of kin priority

Functions are still empty, need to find out how to implement them.
Moved delete button for next of kin to under the next of kin editing
form.
Disable up/down button for first/last next of kin

Also use nice bootstrap label for relation for next of kin in info pane.
Implement methods for switching places of next of kin objects
Clean-up
Fix logic for hiding & showing priority change buttons
Merge pull request #36 from iver56/patient-form-improvements

Patient form improvements