Updated event registration to fix no scrolling on mobile and event registration failure if jQuery not loaded.

[MatthewBacalakis]

Fixing two issues related to event registration.

1. Events were not being registered if full jQuery not loaded. Added check to use addEventListener if jQuery not loaded. Note that along with this change I've found that pull request fixes error with touch events due to jquery wrapping original event #32 is also required for touch events to work.
2. On mobile once an image was loaded the whole page could no longer be scrolled. Moved touchmove and touchend events from window to canvas.

[WillyMichel]

@MatthewBacalakis Thank you for this solution. It solves the original problem. But now that I can scroll on the page on mobile device, I can no longer interact with the cropper, it's here and loaded, but can't move the crop section inside canvas nor resize the crop section. Any tips to solve this new problem ?

[MatthewBacalakis]

I have noticed this happen sporadically even before my changes. It seems to be related to the size of the cropper. It doesn't happen for me when I give the cropper a specific size well smaller then the dimensions of the containing page.

[WillyMichel]

Yes that's it. To solve this I used de specific size on the cropper and I also had to do the pull request #32. I thought it was in your pull request too, so I did not do it.
Thanks a lot for your help !

[MatthewBacalakis]

Great! Glad it helped and sorry for the confusion!

[jerodb]

Thank you @MatthewBacalakis, your solution works great!

[adamnolte]

Fixed my problem! Thanks!