bumped Angular to 7

package.json

@@ -46,13 +46,12 @@
     "tslint": "5.1.0",
     "tslint-config-standard": "5.0.2",
     "tslint-eslint-rules": "4.0.0",
-    "typescript": "^2.8.3",
+    "typescript": "^3.1.3",
     "url-loader": "^1.1.1",
     "val-loader": "0.5.0",
-    "webpack": "^4.20.2",
+    "webpack": "^4.22.0",
     "webpack-cli": "^3.1.2",
-    "yaml-loader": "0.4.0",
-    "yarn": "^1.3.2"
+    "yaml-loader": "0.4.0"
   },
   "build": {
     "appId": "org.terminus",