Revert "Version as 5.2.0"

This reverts commit 8d8eda6.

Author: Tom-Willemsen

base/uk.ac.stfc.isis.ibex.e4.client/plugin.xml

@@ -11,7 +11,7 @@
     </property>
     <property
           name="windowImages"
-          value="../uk.ac.stfc.isis.ibex.e4.product/icons/IBEX-icon-web16.gif,../uk.ac.stfc.isis.ibex.e4.product/icons/IBEX-icon-web32.gif,../uk.ac.stfc.isis.ibex.e4.product/icons/IBEX-icon-web48.gif,../uk.ac.stfc.isis.ibex.e4.product/icons/IBEX-icon-web64.gif">
+          value="platform:/plugin/uk.ac.stfc.isis.ibex.e4.product/icons/IBEX-icon-web16.gif,platform:/plugin/uk.ac.stfc.isis.ibex.e4.product/icons/IBEX-icon-web32.gif,platform:/plugin/uk.ac.stfc.isis.ibex.e4.product/icons/IBEX-icon-web48.gif,platform:/plugin/uk.ac.stfc.isis.ibex.e4.product/icons/IBEX-icon-web64.gif">
     </property>
     <property
           name="applicationCSS"

base/uk.ac.stfc.isis.ibex.e4.client/pom.xml

@@ -2,7 +2,6 @@
   <modelVersion>4.0.0</modelVersion>
   <artifactId>uk.ac.stfc.isis.ibex.e4.client</artifactId>
   <packaging>eclipse-plugin</packaging>
-  <version>5.2.0</version>
   <parent>
   	<groupId>CSS_ISIS</groupId>
   	<version>1.0.0-SNAPSHOT</version>