Merge pull request #446 from bdon/master

various fixes, refactors
Render more line features
Improve vertex rendering
Improve midpoints rendering
put tag editor form on grid.
copy adjustment on inspector confirm/close button
making things consistent with new UI style.
make all icons dark.
experiment with hiding UI during drawing.
Fix redrawing shared vertices
usecapture for stopping right click propagation
Split ways at T junctions (fixes #453)
Don't fill multipolygon boundaries (fixes #426)
Microbranching jshint stuff.
Non-overwriting hash, add hash in select mode. Needs code for dealing

with hash.
Fix tests for non-question hash
Unbind ⌘-Z when exiting DrawLine (fixes #455)
Add willselect to hash, works with non-line features.
Do not tolerate modifiers for action shortcuts.

Tolerates id-equality for selecting features.
Fix tests for hash updates