Tutorial start question
Finished basic tutorial system

For now just simple text messages - interactive exercises coming soon ;)
Tutorial step start/stop functions

Will be used for interactive exercises
First, very simple tutorial arrow
Check for step completion
Expanded tutorial

* Added description of each ship's element
* Preparations for "how to use impulse drive" part of the tutorial
Typo fix
Fix for not being able to play after the tutorial
Added all missing semicolons
Changed tutorial window style to match rest of the game

You can now also move the tutorial window
Impulse drive exercise
Merge pull request #4 from krzys-h/pull-tutorial

Pull tutorial