powderhouse: add steps, improve alignment with imagery.

a driveway (quick)

Some surveying!!

Did some surveying!! and also some geometry improvements from imagery.

church building used as apartments

tag back-in parking. Wow, only 2 uses of this tag worldwide so far.

West Somerville usps (name per outdoor sign + wiki guidelines)

Starbucks Davis perm closed

Davenport St. only partially one-way

"do not enter" except school traffic only

Harcourt Street emergency vehicle crossover access attempt

Bogus church entry (import was somehow very wrong)

unimportant things in Porter Square (truck access, stop sign)

mark some of these as private/residential footways

Fixes the situation where a relation that covered all 3 Lesley campuses was named "Lesley University Porter Campus", while the actual Porter Campus line had no name. This apparently was done by mistake in changeset #129056326.

remove erroneous layer=1

Fix tagging of multipolygon building. (It had building=yes on outer and on multipolygon.)

update couple of shops

Green St. garden and "park" updates, based on survey with help of research.

Building name