add 'edit' button on saved vdots page
Added a more proper 'edit/save' vdot page (still not working fully) and hooked it up to the 'Add' button on the VDOT table
Add code to unwind segues when clicking on 'save' from the benchmark table
Fixing whitespace
Added UIPicker in save vdot view.  Based off of this: http://masteringios.com/blog/2013/10/31/ios-7-in-line-uidatepicker, however it's not working.  There's a weird issue where when you click on the 'benchmark type', the row is added, but it looks like the wrong cell is picked so there's a default cell until you click on that cell, then the picker appears.  Also, the benchmark type doesn't update until you close the picker (but if you re-open the picker, the benchmmark type row will update upon data selection correctly.