ability to create multipolygons
handle extending multipolygons with multiway rings
add multipolygon creation tests
expose relation.joinMemberWays
Merge branch 'master' of github.com:systemed/iD into create-multipolygon
switch from preset grid to preset list

issue #1225
fix display of preset description
Remove preset list limit, fix insertBox
Merge branch 'preset-list'
Fix icon on tag editor page
add styles of schools, universities, pitches

fixes #1389
added support for oneway=1 and oneway=-1

fixes #1400
add more aeroway presets
Cache transform status
Handle incomplete relations in simpleMultipolygonOuterMember
add more man_made presets
Adjust license copyright (fixes #1398)

Oh, the irony.
add college and kindergarten presets
save to localstorage more frequently, fixes #1345
Revert "save to localstorage more frequently, fixes #1345"

This reverts commit 56413563c3b1fbb905bf4112aff581537597430e.