MODE-1708 - Fixed indexing of external nodes when they are changed in a session. Updated the MockConnectorTest with query tests
MODE-1708 - Added "queryable" flag both at the document level and the CacheNode level. The purpose of the flag is to allow nodes and/or node hierarchies to not be indexed. The flag can be set both for internal nodes and external nodes, allowing connectors the explicitly mark nodes are not queryable.
MODE-1708 - Updated connector configuration allowing a connector to be marked as non-queryable, therefore excluding all its content from indexing.
MODE-1708 - Updated setting mechanism for queryable flag.