Fix for #1840, Strip operations from results, forwards delete operations to SDKs (#1946)

* Adding a test demonstrating issue #1840.

* Fixes #1840

* Adds failing test with other use case

- That test fails on parse.com as well

* Bumps parse to 1.9.0

* exclude pg db

* Exclude pg on other test

* Adds clientSDK compatibility check for forward deletion

- Mark js1.9.0 as compatible

* Strips all operations from result

- fix for #1606

package.json

@@ -42,6 +42,7 @@
     "redis": "2.6.2",
     "request": "2.73.0",
     "request-promise": "3.0.0",
+    "semver": "^5.2.0",
     "tv4": "1.2.7",
     "winston": "2.2.0",
     "winston-daily-rotate-file": "1.1.5",