Change handling of packs

The handling of packs has been changed to use different files for builds. This will allow easier implementation of changed packs in future.

shared/main.php

@@ -16,7 +16,7 @@ limitations under the License.
 */
 
 function uupApiVersion() {
-    return '1.6.4';
+    return '1.7.0';
 }
 
 function uupApiPrintBrand() {