Adds Slickgrid

Slickgrid!  Yay!  It's done!

* Removes old and busted manual entry/edit table
* Adds slickgrid
* Strips extra whitespace from text field restrictions
* Adds better datetimepicker
* Adds custom editors for slickgrid
* Other things
* Updates some tests to not blow up when working with the new edit table
* Yep

Note: don't bother code reviewing the 5000 or so lines of code that are third party code.  However, if you could code review better_datetimepicker, that'd be great.
I'm noting this
```
() ->
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Just a reminder, but this applies to all files