use a default file instead of default constants, and use the
conf instead of binding integers with names.
update docs.
missed some config settings in the docs.
Adding initial CHANGELOG.md with documentation from the 0.9.7 release
Adding unreleased features
Merge pull request #215 from continuuity/feature/changelog

Feature/changelog
Merge remote-tracking branch 'origin/develop' into feature/cleanup-constants
adding entry to changelog about conf settings.
Merge pull request #213 from continuuity/feature/cleanup-constants

Feature/cleanup constants
adding newline for checkstyle error.
Merge pull request #216 from continuuity/feature/checkstyle-fix

adding newline for checkstyle error.
Updating release notes to contain more details.
Merge pull request #217 from continuuity/feature/update-release-doc

Updating release notes to contain more details.
Merge pull request #218 from continuuity/release/0.9.7

Release/0.9.7
incrementing project version.
Merge pull request #219 from continuuity/feature/go-to-98-snapshot

incrementing project version.
Merge remote-tracking branch 'origin/develop' into feature/sync-cluster-to-current-template

Conflicts:
	server/src/main/java/com/continuuity/loom/scheduler/task/ClusterService.java