Update build scripts for artifactory.

build.gradle

@@ -38,7 +38,7 @@ publishing {
     repositories {
         maven {
             name 'snapshots'
-            url 'http://nexus.dmdirc.com/nexus/content/repositories/snapshots/'
+            url 'http://artifactory.dmdirc.com/artifactory/repo'
         }
     }
 }
@@ -84,7 +84,7 @@ buildscript {
     repositories {
         mavenCentral()
         maven {
-            url 'http://nexus.dmdirc.com/nexus/content/repositories/thirdparty/'
+            url 'http://artifactory.dmdirc.com/artifactory/repo'
         }
     }