Updated tutorial and input map bug

[Sceptres]

Description

1. Updated the tutorial to include a note on how the view zooms out while accelerating as in issue #628.
2. Also fixed issue #614 and only allowed controls to work if the user is focused on the game screen.

Testing

1. Ran tutorial multiple times to ensure text is within the box range and that the tutorial moves on as expected to the next part
2. Ran steps 2-3 of issue #614 and opened the map, as well as accelerating in the opposite direction of the map button then opening the map.

Outstanding

1. Add the changing ship step into the tutorial
2. Add mercenaries step into the tutorial

Pre Pull Request Checklist:

• [x] Code has been scanned with SonarLint
• [x] There are no errors present in the project
• [x] Code has been formatted and indented
• [x] Methods have appropriate Javadoc (How to write Javadoc)

[Cervator]

Hey @Sceptres - we're still eager to get these improvements merged when ready :-) Are you planning to just re-open with the remaining tweaks?