Improved support for Windows 10 and old hardware

Crashes

• Fixed crash during startup while querying the monitor refresh rate.

• Better asserts that don't just crash. Now, popups message will give some diagnostic info.

• If the level of MSAA requested is too high, reduce the levels until it works.

Camera

• When focus on the window is lost, reset key states and synthesize mouse release events.

• Clamp camera to always be within bounds / valid ranges so you can't get lost in the black outside of the level.

• Reject mouse movements that are unreasonably large (more than 200 px) when translating or rotating the view. Maybe causing camera to go wonky. These could maybe happen due to weirdness from entering and exiting a window / changing focus.

• Added support for emulating the middle mouse button to rotate the view by pressing the left and right mouse buttons at the same time.

Minor

• Reduced sound volume of trains.

• Made a tooltip to press escape to close all windows when hovering the close button of dialogs.

• Draw text right justified and with commas in scores for leaderboard.

• Sometimes I refered to depots as schedules. Changed some, hopefully resulting in more consistent terminology.

• Make sure only one error message about straight tracks at vertices shows.

• Add some clarification in tutorial about things that seem to sometimes cause confusion. How to refuel trains and how to place depots.

• "Enter level" button is incorrectly shown on locked levels.

• Added message for locked industries that the player needs to enter a level and unlock.