Added auto run simulations checkbox to preferences.
Add option to disable flight parameter estimates in the design window.

The plumbing was all there, but no one ever exposed the functionality to the users.
Outdated simulations will now run when the simulations tab is selected.
Updated the checkbox text to be more clear.
Merge remote-tracking branch 'cearls/Auto-run-simulations'

Conflicts:
	swing/src/net/sf/openrocket/gui/dialogs/preferences/PreferencesDialog.java

Manually resolved.
Merge branch 'master' into set-color-defaults-in-options