Fixed bug with webm's and remove images if they are clicked to be expanded

Noticed a bug with image-hover.js that if you hover over a webm video and click it, it will not close because hover event for the mouse exiting the webm thumbnail doesn't register. This would make the script glitchy. Resetting variables and removing the image-hover element seems to fix this problem.


Made it so if you click on an image while hovering over it the hover-image element will be removed.
If you hover over an inline expanded image it will not show the hover image because it seems redundant if you already have the image expanded


Also was adding a checkbox to the webm panel fixed that as well