[Highight Plugin] Improved language detection

[mpryvkin]

• Fixes [Highlight Plugin] Improve language detection #1103

Description

Adds new Highlight plugin options languageNames and languages allowing to hide certain languages by setting property with their name to null, change language name or add support for custom language by providing language ID and its name.

New functionality is optional and has to be enabled by using plugin option languageNames: true .

For example, to hide SVG language and rename HTML language:

$('#example').trumbowyg({
   btns: [
      ['highlight']
   ],
   plugins: {
      highlight: {
         languageNames: true,
         languages: {
            'svg': null,
            'html': 'Hypertext Markup Language'
         }
      }
   }
});

Examples

• Default options
• Enable language names

[mpryvkin]

I used a jQuery trick ($('<div/>').text(value).html()) to encode HTML entities. If there is an internal method that can be used for the same purpose, please let me know and I will replace it.

[Alex-D]

Thank you for your PR :)