Handle translations like template options

Translations will now be passed through `escapeMarkup` and injected
into the results messages as HTML just like the templating options
for the the results and selections.  This fixes the regression from
3.x where the old formatters always supported HTML.

This closes https://github.com/select2/select2/issues/3008.

dist/js/select2.amd.full.js

@@ -272,6 +272,8 @@ define('select2/results',[
   };
 
   Results.prototype.displayMessage = function (params) {
+    var escapeMarkup = this.options.get('escapeMarkup');
+
     this.clear();
     this.hideLoading();
 
@@ -281,7 +283,11 @@ define('select2/results',[
 
     var message = this.options.get('translations').get(params.message);
 
-    $message.text(message(params.args));
+    $message.append(
+      escapeMarkup(
+        message(params.args)
+      )
+    );
 
     this.$results.append($message);
   };

dist/js/select2.amd.js

@@ -272,6 +272,8 @@ define('select2/results',[
   };
 
   Results.prototype.displayMessage = function (params) {
+    var escapeMarkup = this.options.get('escapeMarkup');
+
     this.clear();
     this.hideLoading();
 
@@ -281,7 +283,11 @@ define('select2/results',[
 
     var message = this.options.get('translations').get(params.message);
 
-    $message.text(message(params.args));
+    $message.append(
+      escapeMarkup(
+        message(params.args)
+      )
+    );
 
     this.$results.append($message);
   };

dist/js/select2.full.js

@@ -710,6 +710,8 @@ define('select2/results',[
   };
 
   Results.prototype.displayMessage = function (params) {
+    var escapeMarkup = this.options.get('escapeMarkup');
+
     this.clear();
     this.hideLoading();
 
@@ -719,7 +721,11 @@ define('select2/results',[
 
     var message = this.options.get('translations').get(params.message);
 
-    $message.text(message(params.args));
+    $message.append(
+      escapeMarkup(
+        message(params.args)
+      )
+    );
 
     this.$results.append($message);
   };

dist/js/select2.js

@@ -710,6 +710,8 @@ define('select2/results',[
   };
 
   Results.prototype.displayMessage = function (params) {
+    var escapeMarkup = this.options.get('escapeMarkup');
+
     this.clear();
     this.hideLoading();
 
@@ -719,7 +721,11 @@ define('select2/results',[
 
     var message = this.options.get('translations').get(params.message);
 
-    $message.text(message(params.args));
+    $message.append(
+      escapeMarkup(
+        message(params.args)
+      )
+    );
 
     this.$results.append($message);
   };

src/js/select2/results.js

@@ -31,6 +31,8 @@ define([
   };
 
   Results.prototype.displayMessage = function (params) {
+    var escapeMarkup = this.options.get('escapeMarkup');
+
     this.clear();
     this.hideLoading();
 
@@ -40,7 +42,11 @@ define([
 
     var message = this.options.get('translations').get(params.message);
 
-    $message.text(message(params.args));
+    $message.append(
+      escapeMarkup(
+        message(params.args)
+      )
+    );
 
     this.$results.append($message);
   };