Minor - update lang vars

plugin/exercise_signature/lang/english.php

@@ -8,3 +8,4 @@ $strings['plugin_comment'] = "";
 $strings['tool_enable'] = 'Tool enabled';
 $strings['ProvideASignatureFirst'] = 'Please provide a signature first';
 $strings['Sign'] = 'Sign';
+$strings['SignatureActivated'] = 'Signature activated';

plugin/exercise_signature/lang/french.php

@@ -8,3 +8,4 @@ $strings['plugin_comment'] = "";
 $strings['tool_enable'] = 'Activer le plugin';
 $strings['Sign'] = 'Signer';
 $strings['ProvideASignatureFirst'] = "Veuillez d'abord fournir une signature";
+$strings['SignatureActivated'] = 'Signature activée';

plugin/exercise_signature/lang/spanish.php

@@ -8,3 +8,4 @@ $strings['plugin_comment'] = "";
 $strings['tool_enable'] = 'Activar plugin';
 $strings['Sign'] = 'Firmar';
 $strings['ProvideASignatureFirst'] = "Primero ingrese una firma";
+$strings['SignatureActivated'] = 'Firma activada';

plugin/exercise_signature/lib/ExerciseSignature.php

@@ -106,7 +106,7 @@ class ExerciseSignaturePlugin extends Plugin
      */
     public function install()
     {
-        $extraField = new ExtraField('track_exercise');
+        $extraField = new ExtraField('exercise');
         $extraFieldHandler = $extraField->get_handler_field_info_by_field_variable('signature_activated');
         $exists = $extraFieldHandler !== false;
 
@@ -125,7 +125,7 @@ class ExerciseSignaturePlugin extends Plugin
             );
         }
 
-        $extraField = new ExtraField('exercise');
+        $extraField = new ExtraField('track_exercise');
         $extraFieldHandler = $extraField->get_handler_field_info_by_field_variable('signature');
         $exists = $extraFieldHandler !== false;