Update build scripts for artifactory.

build.gradle

@@ -61,7 +61,7 @@ publishing {
     repositories {
         maven {
             name 'snapshots'
-            url 'http://nexus.dmdirc.com/nexus/content/repositories/snapshots/'
+            url 'http://artifactory.dmdirc.com/artifactory/repo'
         }
     }
 }
@@ -83,10 +83,7 @@ targetCompatibility = 1.8
 repositories {
     mavenCentral()
     maven {
-        url 'http://nexus.dmdirc.com/nexus/content/repositories/thirdparty/'
-    }
-    maven {
-        url 'http://nexus.dmdirc.com/nexus/content/repositories/snapshots/'
+        url 'http://artifactory.dmdirc.com/artifactory/repo'
     }
 }
 
@@ -231,7 +228,7 @@ buildscript {
     repositories {
         mavenCentral()
         maven {
-            url 'http://nexus.dmdirc.com/nexus/content/repositories/thirdparty/'
+            url 'http://artifactory.dmdirc.com/artifactory/repo'
         }
     }