This commit adds a one-time password system. Users can generate
passwords by using the `genotp` command (or manually queuing a set_otp
event with the SHA-256 hash of the one-time password they want to set)
and these passwords will be valid, along with the normal password,
either until the computer shuts down (or the net daemon is killed), a
new one-time password is generated, or the one-time password is used.
Changed the way processes are launched.
multishell.openTab and kernel.run now accept the current environment as a parameter.
That new process inherits a copy of the passed environment.
Reduces complexity as the calling process is not required to create a suitable env.
Stack traces have been greatly improved and now include the stack for coroutines that error.
* canvas overhaul
* minor tweaks
* list mode for overview
* bugfixes + tweaks for editor 2.0
* minor tweaks
* more editor work
* refactor + new transitions
* use layout() where appropriate and cleanup
* mouse triple click + textEntry scroll ind
* cleanup
* cleanup + theme editor
* color rework + cleanup
* changes for deprecated ui methods
* can now use named colors
