Replaces restas with ningle. Restas had 2 problem I could not overcome:
1) It would only let me return a status code or a response, not, for
example, a 403 status code with some json. 2) It would not allow me to
place it under a subdirectory.
Both of these problems possibly (likely) have solutions with restas, but
I already found out how to do these things with ningle.
This rewrite is sloppy and messy. The code should be cleaned up soon.
Users can now either look at the whole list or only tasks assigned to
them. Currently this waits for the refresh to change the list, this
should be fixed in the future.
Instead of having an input in which an assignee's email address can be
entered, show the gravatar of the assignee, or a question mark if no
assignee has been specified, and upon clicking it show a modal dialog
where this information can be changed.
