removing restxq trigger on installation

due to eXist-db/exist#1010

pre-install.xql

@@ -0,0 +1,21 @@
+xquery version "1.0";
+
+import module namespace xdb="http://exist-db.org/xquery/xmldb";
+import module namespace sm="http://exist-db.org/xquery/securitymanager";
+
+(: The following external variables are set by the repo:deploy function :)
+
+(: file path pointing to the exist installation directory :)
+declare variable $home external;
+(: path to the directory containing the unpacked .xar package :)
+declare variable $dir external;
+(: the target collection into which the app is deployed :)
+declare variable $target external;
+
+(:~
+ : Need to remove the RestXQ trigger due to a bug with circular module imports,
+ : see https://github.com/eXist-db/exist/issues/1010 and http://markmail.org/message/jmftuswia4icviht
+~:)
+if(doc-available('/db/system/config/db/collection.xconf')) then
+    xdb:remove('/db/system/config/db', 'collection.xconf')
+else ()

repo.xml

@@ -8,7 +8,7 @@
     <copyright>true</copyright>
     <type>application</type>
     <target>WeGA-WebApp</target>
-    <!--<prepare>pre-install.xql</prepare>-->
+    <prepare>pre-install.xql</prepare>
     <finish>post-install.xql</finish>
 <!--    <permissions user="guest" password="guest" group="guest" mode="rw-rw-r-\-"/>-->
 </meta>