Changed Rest-Calls to new API,

Many bugfixes and some improvements (especially on the map),
Some minor design changes,
Removed MainActivity from Menu

app/src/main/res/layout/activity_view_report.xml

@@ -12,7 +12,7 @@
         android:id="@+id/toolbar"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
-        layout="@layout/layout_toolbar"
+        layout="@layout/layout_toolbar_col"
         android:layout_alignParentTop="true"
         android:layout_centerHorizontal="true" />