Fixed canvas scrolling and size ratio

[RelativeForce]

Issues

closes #56
closes #88

Summary of changes

• Renamed initialBounds to unitBounds
• Added canvasSizeToBounds to scale the unitBounds such that Canvas display ratio #88 is satisfied
• Changed the scroll event listener target to be the canvas instead of the document. Scroll zooming will now only work when the mouse is over the canvas.
• Moved findElementById into Components.Common.HTML as it is a common function.
• Updated findElementById so that it will throw an error if the element is not found instead of failing silently
• Renamed onResize to resize in Components.Canvas.Controller
• Removed Scroll action from Components.Main

Tests

• Test.Plot.JobBatcher.HasJobs (Updated)
• Test.Plot.JobBatcher.SetRunning (Updated)

[michalkonecny]

Thank you. This has worked very well in my tests so far, only with some minor niggles:

• The "reset bounds" button resets both x and y bounds to -1,1. It should reset to the initial bounds.
• When I make the window very narrow but with the canvas still on the right, the left column gets so narrow that the accuracy text box disappears. There should be a larger minimum width for the column so that none of the controls would disappear with this type of narrow window.

[michalkonecny]

Thank you!