work-around a possible bug (or, at least, undesirable behavior0) in CXF when the lastModified date is EQUAL to the if-modified-since header.
use a different util:list id for the rdf indexers vs the dc indexers.
rename indexer -> generator as appropriate for consistencies sake.
Cleans up imports and warnings
minor: Updates links in README
pom cleanup
Renames org.fcrepo.ExceptionHandlers to org.fcrepo.exceptionhandlers (package names should be lowercase).

And moreover, this would be problematic on case-sensitive filesystems since the imports referred to the lc package.
Updates Maven surefire and failsafe plugins from 2.13 to 2.14
Adds missing plugin and report plugin versions that was causing Maven warnings
Cleans up some dependencies. We still have the issue where other modules or services
pull in fcrepo-kernel and all its transitive dependency weight just to have a pidminter.
Changed org.fcrepo.exceptionhandlers to org.fcrepo.exception and altered inheritance of InvalidChecksumException

There are no ExceptionHandlers in that package, and because fcrepo-kernel does not use JAX-RS, there never will be.
Additionally, an invalid checksum is _not_ a JCR exception. It's an exception for the Fedora semantics.
Mergg remote-tracking branch 'upstream/master'

Conflicts:
	fcrepo-http-api/src/main/java/org/fcrepo/api/FedoraDatastreams.java