Update Package Versions

* Update dependency versions of packages to be consistent
* Update packages to avoid security warnings
* Add ajv to dependencies to avoid bug
 npm/npm#19877
* Remove unnecessary package-lock.json files

package.json

@@ -10,13 +10,14 @@
 		"@types/node": "^8.0.0",
 		"@types/react": "16.3.14",
 		"@types/react-dnd": "^2.0.36",
-		"ava": "^0.24.0",
+		"ajv": "^6.4.0",
+		"ava": "^0.25.0",
 		"babel-loader": "^7.1.2",
 		"coveralls": "^3.0.0",
 		"cross-env": "^5.1.1",
 		"lcov-result-merger": "^2.0.0",
 		"lerna": "^2.11.0",
-		"nyc": "^11.4.1",
+		"nyc": "^11.8.0",
 		"source-map-loader": "^0.2.3",
 		"ts-loader": "^3.2.0",
 		"tslint": "^5.8.0",