Toggle comment in the Velocity editor

I've just start development of the next version of ClickIDE.

I added Toggle Comment action to the Velocity editor. You can toggle comment for selected lines by the context menu or CTRL + /.

By the way, Now I'm planning JSP and FreeMarker support in the next version of ClickIDE. I have no concrete idea yet, but I wish to provide FreeMarker editor which has features same as the Velocity editor.