Stop trimming preceding and suffixing spaces from editor filenames

In go-gitea#5702 it was decided to trim preceding and suffixed spaces aswell as / from
editing file filenames. This was because at this point in time the url-safety of
gitea was much poorer.

We can now drop this requirement and file editing should work correctly.

Fix go-gitea#18176

Signed-off-by: Andrew Thornton <art27@cantab.net>

routers/web/repo/editor.go

@@ -728,7 +728,7 @@ func UploadFilePost(ctx *context.Context) {
 
 func cleanUploadFileName(name string) string {
 	// Rebase the filename
-	name = strings.Trim(path.Clean("/"+name), " /")
+	name = strings.Trim(path.Clean("/"+name), "/")
 	// Git disallows any filenames to have a .git directory in them.
 	for _, part := range strings.Split(name, "/") {
 		if strings.ToLower(part) == ".git" {

services/repository/files/file.go

@@ -129,7 +129,7 @@ func GetAuthorAndCommitterUsers(author, committer *IdentityOptions, doer *user_m
 // CleanUploadFileName Trims a filename and returns empty string if it is a .git directory
 func CleanUploadFileName(name string) string {
 	// Rebase the filename
-	name = strings.Trim(path.Clean("/"+name), " /")
+	name = strings.Trim(path.Clean("/"+name), "/")
 	// Git disallows any filenames to have a .git directory in them.
 	for _, part := range strings.Split(name, "/") {
 		if strings.ToLower(part) == ".git" {