added mapping and settings importers
Merge branch 'master' into import_settings_mappings
handle index missing exception
added tests for mapping and settings imports
added mapping and settings import options to read me
Merge branch 'master' into import_settings_mappings
added settings and mappings default to true on restore
added changes entry
Merge pull request #23 from crate/import_settings_mappings

Import settings mappings
Merge branch 'master' into searchinto-cluster

Conflicts:
	CHANGES.txt