Merge branch 'MDL-29612' of git://github.com/stronk7/moodle.git with typo cleanup

diff --cc admin/tool/xmldb/actions/edit_field/edit_field.js
index 0ad9133,d241042..61aac8b
--- 1/admin/tool/xmldb/actions/edit_field/edit_field.js
--- 2/admin/tool/xmldb/actions/edit_field/edit_field.js
+++ b/admin/tool/xmldb/actions/edit_field/edit_field.js
@@@ -90,9 -92,11 +92,11 @@@ function transformForm(event) 
          case '3':  // XMLDB_TYPE_FLOAT
              lengthTip.innerHTML = ' 1...20 or empty';
              decimalsTip.innerHTML = ' 0...length or empty';
+             unsignedField.disabled = true;
+             unsignedField.value = '0';
              break;
          case '4':  // XMLDB_TYPE_CHAR
-             lengthTip.innerHTML = ' 1...'.xmldb_field::CHAR_MAX_LENGTH;
 -            lengthTip.innerHTML = ' 1...1333'; // Harcoded, yes!
++            lengthTip.innerHTML = ' 1...1333'; // Hardcoded, yes!
              decimalsTip.innerHTML = '';
              decimalsField.disabled = true;
              decimalsField.value = '';