Try to add maps to the history view BUT...

...JSHint keeps crashing when I try to build, and I don't have time to go back
and revert individual sections to figure out what's crashing it.
Fixes JSHint issue Colin was having

The maven plugin for JSHint we're using is rather buggy. I used JSHint
under nodejs to find the problem and fixed it, which fixes the
compilation.

This commit also includes (as an added bonus!) a configuration file for
jshint (if you want to run it from the command line yourself).
Get partially-working maps on the history page
Fix up Colin's history list map implementation

Everything seems to draw properly now, and the map in the history list
is static (you can't move it around with the mouse).
Fix map zooming issues on history list

Turns out it was an issue with our old friend, `L.Map::invalidateSize`.
Merge pull request #42 from routemaster/features/history

Show maps on the history view