update MapInfo widget

Now supports grid, decimal lat/lng and DMS lat/lng. Can project grid to
decimal or DMS lat/lng.
Merge pull request #169 from btfou/map-info

update MapInfo widget
corrected typo in StreetView.js

projCustomURL: was a typo and corrected to proj4CustomURL: as used in line # 175
Merge pull request #170 from friendde/patch-1

corrected typo in StreetView.js
fixes #155
Merge pull request #173 from tmcgee/master

fixes #155
Merge remote-tracking branch 'upstream/master'