Any client that wants to can include it back again, but generally
it only causes problems (XML returned from apps instead of
JSON by Spring MVC for instance). In general it only causes problems
for services whose clients use "Accept: application/xml,*/*", for
instance (like a browser).

See gh-306

Added spring-cloud-starter-archaius so downstream projects
like consul and zookeeper don't need to maintain the list of
archaius depenencies.

fixes gh-765

This reverts commit 721fdc59.

Some projects were failing on `./mvnw install` due to a non-existent
local path. This makes all poms use the same approach.