Prevent a closed way from disconnecting itself..
Update tests to not allow closed way to disconnect itself.
preserve disconnect for lines, improve disconnect for shared nodes in areas..
Improve test cases for disconnect action to cover shared area nodes..
Merge pull request #2178 from bhousel/bhousel-operations

Using disconnect on a closed way can break areas.
remove layer field from waterway=stream
add `place=suburb`, but named Borough
Merge pull request #2180 from bhousel/bhousel-presets

Presets
Incorporate Slide Tool (http://labs.strava.com/slide)
Updates to Slide
Add overlay type as slide parameter

ie. if you have the running heat map on, it’ll slide to running data
only.