Restore HTML menu max length, but as an optional feature and improved the trimming with HTML banners

[Dliix66]

This PR is following #747

It adds the ability to enable or disable the limit. But it also improves the trimming by not taking HTML banners into account, but it also closes the open banners after trimming to avoid any visual issues.

Example:
"Hello World! This is a test." trimmed to 8 characters will be "Hello Wo"

To do this, add this in your config:
"MaxHtmlMenuTitleLength": 0, // 0 = unlimited, previous value = 32
"MaxHtmlMenuOptionLength": 0, // 0 = unlimited, previous value = 26`

[roflmuffin]

Not sure this should really be a core config, given that the plugin author themselves would not be able to predict the behaviour of their menu based on this setting. If this is a desired functionality of the menu, I think it should be opt-in by the plugin author when they create the menu, rather than it coming from CSS