Some Panel widgets do not work offline

[apirogov]

In panel 0.14 the issue appears to be touching (for what we use) just Ace (code editor), but in >1.0 it's actually worse - the inline=True flag does not work for multiple things, including

• panel default styles
• panel divider widget (probably others)
• codeeditor widget (ace)
• tabulator widget

Furthermore, apparently calling pn.extension() somehow manages to add unused extensions, so that
pn.extension(inline=True) does NOT work (because CDN of an extension, but pn.config.inline=True does.

Partial problem reported here: holoviz/panel#5479

Before updating panel to the newest version, make sure to figure out all the new bugs and report them and wait until they are fixed.

Once this is done, proceed with update:

• Ace is CodeEditor in the new version
• switch from bokeh DataFrame widget to the more fancy tabulator widget (if it works offline)
• style was renamed to styles
• check out https://panel.holoviz.org/upgrade.html