Update [bw_logo] for jQuery 3.5.1 compatibility

[bobbingwide]

• The [bw_logo] shortcode was written a long time ago for use with Artisteer themes.
• I've now stopped using Artisteer themes myself.
• The [bw_logo] shortcode enqueues oik_bw_logo.js regardless of the theme
• The JavaScript is specific to Artisteer themes, only working when the logo is within a div.textwidget inside a div.art-header
• The code uses .bind, which is deprecated in jQuery 3.5.1

Requirements

• No console messages
• Logic to work with WordPress 5.5. and above. i.e. All 8 combinations of Test jQuery Updates

Proposed solution

• Change .bind to .on
• Test with a shortcode example

[bobbingwide]

I created a new shortcode example bw_logo resizable and tested it on s.b/oikcom.
It did resize, but only downwards, until it disappeared.
There was also some CSS which affected the resizing.

With the TwentyTwenty theme using [bw_logo] on its own, or in the shortcode block, produced an image which was sized larger than its width.

Perhaps I should:

• not bother enqueing the script.
• remove the script completely
• wrap the logo in a div with a class of bw_logo for improved styling

[bobbingwide]

Perhaps I should:

• not bother enqueing the script.
• remove the script completely
• wrap the logo in a div with a class of bw_logo for improved styling

Also, update oik.css to ensure that img.bw_logo has max-width: 100%; when displayed in .entry-content

and that will allow us to delete

img { max-width: 100%; width: auto/9; /* Prevent stretching of full-size images in IE8 */ }

which was found to have been adversely affecting background images in Google web story.
#152