ACCUMULO-1487, ACCUMULO-1491 Stop packaging docs for monitor

Moved docs out of monitor and into docs directory. Added docs to assemblies.
Remove unnecessary goals from release profile. Remove links from docs to
apidocs. Restricted rpms/debs from being placed in lib/ and docs/ in tarball.
Merge branch '1.6.0-SNAPSHOT'

Conflicts:
	core/src/main/java/org/apache/accumulo/core/conf/DefaultConfiguration.java