[Fix] Don't display way too large files #1513 (#3253)

* Add MaxDisplayFileSize setting

* Don't show files that are too large

* Localized FileTooLarge

* Change IsFileTooBig => IsFileTooLarge

templates/repo/view_file.tmpl

@@ -41,8 +41,12 @@
 				<table>
 					<tbody>
 						<tr>
+						{{if .IsFileTooLarge}}
+							<td><strong>{{.i18n.Tr "repo.file_too_large"}}</strong></td>
+						{{else}}
 							<td class="lines-num"></td>
 							<td class="lines-code"><pre><code class="{{.HighlightClass}}"><ol class="linenums">{{.FileContent}}</ol></code></pre></td>
+						{{end}}
 						</tr>
 					</tbody>
 				</table>