! Display an error dialog when seeking settings of an undefined tab.
! Detect if ConsoleZ is hooked (ConsoleHook/ConsoleHook32).
+ "New Tab" button in tabs area.
+ Save "Switch On/Off Transparency" state.
* Fix startup directory consistency.
* Fix retrieving of last process ID attached to the console.
* Fix sliders in transparency settings dialog.
* Refresh tab title when last process ID attached to the console changes.
* Fix bing image copyright displayed into status bar.
* Fix external command saving into settings file.