Added hashCode override to AbstractEquals

AbstractEquals#hashCode() now just calls super.hashCode().  This just
silences a static analysis warning about overridding equals without
hashCode.
Fix javadoc typo
Adding Rexster static web assets to titan-server
Hack to let titan.sh start Rexster from any dir
Add hazelcast.xml to titan-server zipfile
Implemented sort-ordering for label definitions
Merge branch 'sorting'
Merge branch 'master' into titan-accumulo
Added supportsMultiQuery = true to Accumulo features.