Fix bugs with task editability.

* Typo in "remote" store deserialization function.

* Forgot to add "editable" property in "remote" store "create" method.
Fix bug with resize broken after using "ng-if" directive.

* It seems like the ng-if directive removes the DOM element that was
  seen by the link function of a directive on an ancestor element.  My
  guess is that the jQuery "resizable" function added handlers to the
  resize handle element which later gets removed by "ng-if". Use
  "ng-show" instead since this only detaches DOM elements instead of
  removing them.