Author: Rex Lorenzo
MDL-33090 - Missing strings in XMLDB editor - added in missing strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c31149fa6714176cf1312094f502b50b48dab2f7
http://github.com/moodle/moodle/commit/c31149fa6714176cf1312094f502b50b48dab2f7
+ 2.2 en [duplicatefieldsused,tool_xmldb]
+ 2.2 en [fieldsusedinindex,tool_xmldb]
+ 2.2 en [incorrectkeyname,tool_xmldb]
+ 2.2 en [keynameempty,tool_xmldb]
+ 2.2 en [nofieldsspecified,tool_xmldb]
+ 2.2 en [noreffieldsspecified,tool_xmldb]
+ 2.2 en [noreftablespecified,tool_xmldb]
+ 2.2 en [primarykeyonlyallownotnullfields,tool_xmldb]
+ 2.2 en [wrongnumberofreffields,tool_xmldb]