Revert: 443287: Upgrade to RAP 3.0 AND

switch to RAP 2.3 SR2

Change-Id: I57c78615c4b842803b100ab580eb889cb39a6280
diff --git a/org.eclipse.scout.rt.rap.target/org.eclipse.scout.rt.rap.target_template.target b/org.eclipse.scout.rt.rap.target/org.eclipse.scout.rt.rap.target_template.target
index 6900c05..38c375c 100644
--- a/org.eclipse.scout.rt.rap.target/org.eclipse.scout.rt.rap.target_template.target
+++ b/org.eclipse.scout.rt.rap.target/org.eclipse.scout.rt.rap.target_template.target
@@ -2,7 +2,8 @@
 <?pde version="3.6"?><target name="Rap" sequenceNumber="13">
   <locations>
     <location includeAllPlatforms="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
-    <repository id="rap_3.0" location="http://download.eclipse.org/rt/rap/3.0/RC4-20150602-0950/"/>
+      <repository id="rap_2.3" location="http://download.eclipse.org/rt/rap/2.3/SR2-20150128-1013//"/>
+
       <unit id="org.eclipse.rap.feature.feature.group" version="0.0.0"/>
     </location>