Fix width and font of the dropzone

src/main/twirl/gitbucket/core/helper/attached.scala.html

@@ -29,7 +29,10 @@ $(function(){
   }
 
   // Adjust clickable area width
-  $('#@textareaId').next('div.clickable').css('width', ($('#@textareaId').width() + 18) + 'px');
+  $('#@textareaId').next('div.clickable').css({
+    'width': ($('#@textareaId').width() + 18) + 'px',
+    'font-size': '13px'
+  });
 });
 </script>
 }

src/main/twirl/gitbucket/core/issues/editcomment.scala.html

@@ -2,7 +2,7 @@
 @import context._
 <span id="error-edit-content-@commentId" class="error"></span>
 @helper.html.attached(owner, repository){
-  <textarea id="edit-content-@commentId">@content</textarea>
+  <textarea id="edit-content-@commentId" class="form-control">@content</textarea>
 }
 <div>
   <input type="button" id="cancel-comment-@commentId" class="btn btn-lg btn-danger" value="Cancel"/>

src/main/twirl/gitbucket/core/issues/editissue.scala.html

@@ -1,7 +1,7 @@
 @(content: Option[String], issueId: Int, owner: String, repository: String)(implicit context: gitbucket.core.controller.Context)
 @import context._
 @helper.html.attached(owner, repository){
-  <textarea id="edit-content">@content.getOrElse("")</textarea>
+  <textarea id="edit-content" class="form-control">@content.getOrElse("")</textarea>
 }
 <div>
   <input type="button" id="cancel-issue" class="btn btn-lg btn-danger" value="Cancel"/>