clean up repos

repositories.gradle

@@ -3,10 +3,16 @@
 repositories {
     mavenCentral()
     maven {
-        name = "GTNH Maven"
-        url = "http://jenkins.usrv.eu:8081/nexus/content/groups/public/"
+        name 'GTNH Maven'
+        url 'http://jenkins.usrv.eu:8081/nexus/content/groups/public/'
     }
     maven {
-        url = "https://jitpack.io"
+        url 'https://cursemaven.com'
+        content {
+            includeGroup 'curse.maven'
+        }
+    }
+    maven {
+        url 'https://jitpack.io'
     }
 }