Bug: resetStyles misses a semicolon between old styles

[RikaIljina]

Issue: missing semicolon space between two styles after reset: <div class="jumbotron recipe-jumbotron u-margin-b-l wsadvert" data-wsloc="articletop" style="line-height: 26.08pxbackground-image: url("/bilder/artikel-hog/8343/ugnsbakad-lax-med-ljuvlig-glaze.jpg");">

Recreate bug:

• Open page with background image saved as inline style https://www.vinochmatguiden.se/recept/vin-matguiden/ugnsbakad-lax-med-ljuvlig-glaze
• Open extension
• "Fix contrast" is activated, "Hide bg" is deactivated
• Toggle "Hide bg" several times
• Result: After two toggles, the background image isn't restored

[RikaIljina]

Fix attempt, see issue #114