Change JavaPlugin_additionalInfo_affordance text

This commit chnages the text of JavaPlugin_additionalInfo_affordance to
also mention hover as the PopupCloser in eclipse.platform.ui also reacts
to hovering now.

contributes to #62 and #128

Author: amartya4256

org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaUIMessages.properties

@@ -17,7 +17,7 @@
 #     Pierre-Yves B. <[email protected]> - Generation of equals and hashcode with java 7 Objects.equals and Objects.hashcode - https://bugs.eclipse.org/bugs/show_bug.cgi?id=424214
 ###############################################################################
 
-JavaPlugin_additionalInfo_affordance=Press 'Tab' from proposal table or click for focus
+JavaPlugin_additionalInfo_affordance=Press 'Tab' from proposal table or click/hover for focus
 JavaPlugin_internal_error=Internal Error
 JavaElementProperties_name=Name