$(MODIF) tag in custom rules does not fully work (Windows version)

[biru-cs]

I may be your first Windows tester. If that is truly the case, I'm really glad because Rust has recently drawn a lot more attention and this project looks promising. It's nice to see an open source app being also built for Windows :)

Onto the bug I've noticed in the Windows build:
The $(MODIF) tag in the custom rules does not work properly: it is shown in the status view (image 1, below), it tries to rename the file(s) accordingly when I click on the "Start Renaming" button and confirm, but fails, saying "Ignored 1 file(s), because there" (size issues with the results dialog box?) (image 2, below). After this, the same file(s) cannot be added anymore, even after reopening the executable. If the rule is anything other than a custom rule (I've not tested any other tags yet), the batch renaming works perfectly fine and the same file(s) can be re-added without any issues.

Improvements (in my opinion, at least):

1. In the Windows build, a command prompt window opens. Perhaps you could hide it from the end user. If not, I personally don't mind.
2. Bigger text for some elements (e.g. "Status" in the status pane in the lower area)

Other than that, the app is great! Keep on!

[qarmin]

Fixed by #27
Custom rules also on Linux not always work properly, but this should be mostly fixed.
Console shouldn't be visible on Windows
Also information about ignored files is now proper