Tweaking the filter box to work in IE.
Merge pull request #724 from RobertDenis/ie-fixes

IE Fixes
Added missing data on transform functions and x-spaceAround
Pull in proj4js
Use proj4js to define the map projection
Implement zoom to layer extent
Merge pull request #726 from tbarsballe/yslddocs

Added missing data on transform functions and x-spaceAround