Minor quality of life update

This is a minor update adding a tiny amount of changes, that started annoying me.

• The extended downloader column widths for the video and audio formats are saved when closing, and loaded when loading.
• The icons for the batch forms were updated to include the outline like the extended downloader form.
• The about forms' text was updated. I know part of it isn't translatable, it's not meant to be translatable.

If you're one of the unlucky souls to download version 3.0.1 within 5 minutes of it releasing and have not gotten the hotfix:

• Fixed long string values being loaded incorrectly causing issues when loading values such as the download path or file name schema history.

Finally, translations were updated. Consider using the language downloader to update (if it works, I haven't tried):

• German translation was updated (Thanks @uDEV2019)
• Simplified Chinese translation was added (Thanks @wcxu21)
• Russian translation was updated (Thanks @Qwest8K)

Sorry for not keeping up with translations in the patch notes.

exe sha-256: 6297B0F252144F1972D225D0B470EA7A5E1BFF4B636B6393DEA2259BFC7652DC
zip sha-256: 435AA164DD2D0E27277D2F36A157CE9812BAC86C3A4B23A81FBE797CE28534A6