Fixes

Fixes to be backported:
* Removed duplicate component sync call, might be the reason for #635
* Fixed colors of downloads in tutorials, needed for tutorial changes
* Fixed uploads after first upload, fixes #629
* Fixed tasks that only run once
* Only disabling emulation on connections that support it (fixes error message)
* Removing more windows to avoid problems (fixes problem with connection windows after first one)
* Caching capabilities (might be responsible for slow actions)

Not to be backported:
* Some changes to tutorial