Merge pull request #698 from caskdata/feature/file-separate-module

move file set dataset type into its own module
[cdap-473] firefox fix for controls group
Bump version to 2.7.0-SNAPSHOT
Merge pull request #706 from caskdata/feature/bump-2.7.0-SNAPSHOT

Bump version to 2.7.0-SNAPSHOT
Fixed typo. Changed "Spark Jobs" to "Spark Programs".
Add release notes for 2.6.0 place-holders.
Fix broken link in cdap-etl-packs.
Fix deprecation tag to link to service instead of context.
Comment out LocalServices and add in links to examples using Services.
Fix broken link.
Readability improvement.
Merge branch 'release/2.6.0' into feature/r2.6.0_doc_updates
Spark Jobs -> Spark Programs
Fix Javadoc links to replacement classes.
[cdap-647] settings, stop buttons are now available in running state on workflow page
[cdap-647] identation corrections
Update description of parameters to match syntax of methods.
CDAP-654: Added a unit test which tests Services integration with MapReduce
CDAP-654: addressed comments
Fix build of docs to use the correct versions of READMEs on ancillary repos.
Merge branch 'release/2.6.0' into feature/r2.6.0_doc_updates