Added deletion of an empty line at the end of the file (#4050) (#4054)

Signed-off-by: Alexey Terentyev <axifnx@gmail.com>

routers/repo/view.go

@@ -223,6 +223,10 @@ func renderFile(ctx *context.Context, entry *git.TreeEntry, treeLink, rawLink st
 
 			var output bytes.Buffer
 			lines := strings.Split(fileContent, "\n")
+			//Remove blank line at the end of file
+			if len(lines) > 0 && lines[len(lines)-1] == "" {
+				lines = lines[:len(lines)-1]
+			}
 			for index, line := range lines {
 				line = gotemplate.HTMLEscapeString(line)
 				if index != len(lines)-1 {