bump angular compiler

This fixes errors like

ERROR in ./src/app/components/...
Module not found: Error: Can't resolve '...' in '...'

as decribed here: angular/angular-cli#11835

Author: ulferts

frontend/npm-shrinkwrap.json

@@ -33,8 +33,8 @@
     "@angular/cdk": "6.4.3",
     "@angular/cli": "6.1.3",
     "@angular/common": "6.1.2",
-    "@angular/compiler": "6.1.2",
-    "@angular/compiler-cli": "6.1.2",
+    "@angular/compiler": "6.1.10",
+    "@angular/compiler-cli": "6.1.10",
     "@angular/core": "6.1.2",
     "@angular/forms": "6.1.2",
     "@angular/http": "6.1.2",