use monospace font for wiki and issue textareas (fix #2869)

public/css/gogs.css

@@ -1506,6 +1506,7 @@ footer .container .links > *:first-child {
 }
 .repository.view.issue .comment-list .comment .ui.form textarea {
   height: 200px;
+  font-family: "Consolas", monospace;
 }
 .repository.view.issue .comment-list .comment .edit.buttons {
   margin-top: 10px;
@@ -1587,6 +1588,7 @@ footer .container .links > *:first-child {
 }
 .repository .comment.form .content textarea {
   height: 200px;
+  font-family: "Consolas", monospace;
 }
 .repository .label.list {
   list-style: none;
@@ -1966,6 +1968,9 @@ footer .container .links > *:first-child {
 .repository.wiki.start .ui.segment .mega-octicon {
   font-size: 48px;
 }
+.repository.wiki.new .CodeMirror .CodeMirror-code {
+  font-family: "Consolas", monospace;
+}
 .repository.wiki.new .CodeMirror .CodeMirror-code .cm-comment {
   background: inherit;
 }

public/less/_repository.less

@@ -456,6 +456,7 @@
 					}
 					textarea {
 						height: 200px;
+						font-family: "Consolas", monospace;
 					}
 				}
 
@@ -531,6 +532,7 @@
 			}
 			textarea {
 				height: 200px;
+                font-family: "Consolas", monospace;
 			}
 		}
 	}
@@ -992,10 +994,13 @@
 
 		&.new {
 			.CodeMirror {
-				.CodeMirror-code .cm-comment {
+				.CodeMirror-code {
+					font-family: "Consolas", monospace;
+					.cm-comment {
 						background: inherit;
 					}
 				}
+			}
 
 			.editor-preview {
 				background-color: white;