Make display of EasyMDE in UI optional to template

This commit adds EasyMDE field to combomarkdowneditor, as well as to all its calls.

templates/repo/diff/box.tmpl

@@ -239,6 +239,7 @@
 					"MarkdownPreviewContext" $.RepoLink
 					"TextareaName" "content"
 					"DropzoneParentContainer" ".ui.form"
+					"EasyMDE" true
 				)}}
 				{{if .IsAttachmentEnabled}}
 					<div class="field">

templates/repo/diff/comment_form.tmpl

@@ -17,6 +17,7 @@
 			"TextareaPlaceholder" (ctx.Locale.Tr "repo.diff.comment.placeholder")
 			"DropzoneParentContainer" "form"
 			"DisableAutosize" "true"
+			"EasyMDE" true
 		)}}
 
 		{{if $.root.IsAttachmentEnabled}}

templates/repo/diff/new_review.tmpl

@@ -21,6 +21,7 @@
 						"TextareaName" "content"
 						"TextareaPlaceholder" (ctx.Locale.Tr "repo.diff.review.placeholder")
 						"DropzoneParentContainer" "form"
+						"EasyMDE" true
 					)}}
 				</div>
 				{{if .IsAttachmentEnabled}}