MDL-27200 missing {} in various lang strings.

lang/en/grades.php

@@ -236,7 +236,7 @@
 $string['gradeexportdecimalpoints_desc'] = 'The number of decimal points to display for export. This can be overridden during export.';
 $string['gradeexportdisplaytype'] = 'Grade export display type';
 $string['gradeexportdisplaytype_desc'] = 'Grades can be shown as real grades, as percentages (in reference to the minimum and maximum grades) or as letters (A, B, C etc..) during export. This can be overridden during export.';
-$string['gradeforstudent'] = '{$a->student}<br />{$a->item}$a->feedback';
+$string['gradeforstudent'] = '{$a->student}<br />{$a->item}{$a->feedback}';
 $string['gradehelp'] = 'Grade help';
 $string['gradehistorylifetime'] = 'Grade history lifetime';
 $string['gradehistorylifetime_help'] = 'This specifies the length of time you want to keep history of changes in grade related tables. It is recommended to keep it as long as possible. If you experience performance problems or have limited database space, try to set lower value.';

mod/lti/lang/en/lti.php

@@ -172,7 +172,7 @@
 * **Edit** - Select a course level tool type from the dropdown, then click this icon. The details of the tool configuration may be edited.
 * **Delete** - Remove the selected course level tool type.';
 $string['external_tool_types'] = 'External Tool Types';
-$string['failedtoconnect'] = 'Moodle was unable to communicate with the \"$a\" system';
+$string['failedtoconnect'] = 'Moodle was unable to communicate with the "{$a}" system';
 $string['filter_basiclti_configlink'] = 'Configure your preferred sites and their passwords';
 $string['filter_basiclti_password'] = 'Password is mandatory';
 $string['filterconfig'] = 'LTI administration';
@@ -225,7 +225,7 @@
 $string['lti:requesttooladd'] = 'Submit a tool to admins for configuration';
 $string['lti:view'] = 'View LTI activities';
 $string['lti_administration'] = 'LTI Administration';
-$string['lti_errormsg'] = 'The tool returned the following error message: \"$a\"';
+$string['lti_errormsg'] = 'The tool returned the following error message: "{$a}"';
 $string['lti_launch_error'] = 'An error occured when launching the external tool: ';
 $string['lti_launch_error_tool_request'] = '<p>
 To submit a request for an administrator to complete the tool configuration, click <a href="{$a->admin_request_url}" target="_top">here</a>.
@@ -255,7 +255,7 @@
         Moodle instance. Instructors may still use tools from these providers if they have a consumer key and shared secret, or if none is required.';
 $string['miscellaneous'] = 'Miscellaneous';
 $string['misconfiguredtools'] = 'Misconfigured tool instances were detected';
-$string['missingparameterserror'] = 'The page is misconfigured: \"$a\"';
+$string['missingparameterserror'] = 'The page is misconfigured: "{$a}"';
 $string['module_class_type'] = 'Moodle module type';
 $string['modulename'] = 'External Tool';
 $string['modulename_help'] = 'External tools allow Moodle users to interact with learning resources and activities on other web sites. For instance, an

question/type/calculated/lang/en/qtype_calculated.php

@@ -64,7 +64,7 @@
 $string['functiontakestwoargs'] = 'The function {$a} must have exactly two arguments';
 $string['generatevalue'] = 'Generate a new value between';
 $string['getnextnow'] = 'Get new \'Item to Add\' now';
-$string['hexanotallowed'] = 'Dataset <strong>{$a->name}</strong> hexadecimal format value $a->value is not allowed';
+$string['hexanotallowed'] = 'Dataset <strong>{$a->name}</strong> hexadecimal format value {$a->value} is not allowed';
 $string['illegalformulasyntax'] = 'Illegal formula syntax starting with \'{$a}\'';
 $string['incorrectfeedback'] = 'For any incorrect response';
 $string['item(s)'] = 'item(s)';