Improve multi-download module selection

[misode]

### Tasks
- [ ] Version does not update when changed via the "All modules" panel
- [ ] Ability to select all modules in a "Browse" category
- [ ] Ability to select all the visible modules in the "All modules" panel after searching
- [ ] Module downloads are not tracked from a multi-download
- [ ] Different minor versions can be selected and downloaded together, but won't work in-game