(Issue 284) Consolidating 'title' and 'name' terminology to displayName for groups, content and search
(Issue 284) Changing how '_extra' field on search documents is handled. Honour 'extra' field of users
(Issue 284) Disabling _source on resource index.
Revert description to not be the ternary operation anymore.
Removing _type off the view model. Removing general and sort fields from users when converting user object back to search document for view.
Merge branch 'master' into issue-284

Conflicts:
	node_modules/oae-content/lib/rest.js
	node_modules/oae-search/lib/util.js
Merge branch 'master' into issue-284

Conflicts:
	node_modules/oae-principals/lib/api.group.js
	node_modules/oae-principals/lib/internal/dao.js
	node_modules/oae-principals/lib/model.group.js
	node_modules/oae-principals/lib/search.js
	node_modules/oae-search/tests/test-general-search.js
Merge branch 'master' into issue-284

Conflicts:
	node_modules/oae-search/lib/api.js