add sbt-idea plugin.
Implement support for Titan specific helpers.

support for saveWithLabel in db context.

vertex label support for titan wrapped by IdGraph.

add IdGraph based TitanGraph wrapper.
more robust reload
(cherry picked from commit bcd0517)
add addVertexWithLabel method for IdGraph[TitanGraph] wrapper.
(cherry picked from commit fef20cf)
transactIdGraph support idFactory as param
(cherry picked from commit 58bd608)
add implicitConversions param for scalacOptions.

fixup some scala syntax for 2.10
remove deprecated code.