Prepare 2.0 release

• Fix search by id when it is array.
• support header execution-limit to limit execution time
• support header force-index to force index search
• support for env MAX_TIME_MS to set max exection time for search
• support noCount request params to avoid countin total-count on search
• properly close mongo connection on SIGINT (mfw stop serviceName)

1.3.0

• Open mongo connection on class init, instead of each request.
• allow to replace default Table by requestDetails.mongoTable variable