fixed a bunch of instance and command line stuff

- clear instance manager overrides when restarting, or switching instances after starting MO with moshortcut://instance: won't do anything
- clear overrides when the last selected instance can't be opened; MO would keep trying to open shortcuts even after selecting a different instance
- command line was cleared too early, before the first run, so shortcuts were broken
- the instance manager dialog can be opened without an instance loaded if the last selected instance doesn't exist, createNew() would throw because it tried to access the global Settings
- fixed some problems with parts of MO wanting to restart and others expecting flow to continue
- fixed create instance dialog using settings pointer to decide whether to restart; it restarts when it's the first created instance, which is not always the case even if the settings are null, so just check whether there are instances

0 files changed, 0 insertions, 0 deletions