Downloading subtitles dialog and no feedback, when there's none

[raven6679]

Description

Hi.
First of all - great, elegant skin!
Although, there's several "features" missing or some kind of quirks.

For example, when you try to download subtitles and for specific srt handler there is no entry, skin does not report "not found", but the list stays empty forever.

Checklist:

• I have checked if I am using the latest version of Grid at the time of opening this issue
• I am running a Kodi version that is listed as compatible in Grid's README file
• I have checked if all of the required add-ons are installed on my system
• I have checked whether this behaviour is also present in Kodi's default skin
• I have screenshots or a video for further explanation. I have included a link to the image(s) or video in my description
• I have a debug log for (further) explanation. I have included a link to the log on pastebin.com or similar service in my description