Clean up grammar source #2

[MaximSokolov]

Continuation of #407

[Alhadis]

Uh, please don't. I've literally just fixed a bug with matching this:

var instance = new obje$ct.Cla$ss();

Code looks like this now:

    'match': '(new)\\s+([\\w$]+[\\w.$]*)'
    'name': 'meta.class.instance.constructor'
    'captures':
      '1':
        'name': 'keyword.operator.new.js'
      '2':
        'name': 'entity.name.type.instance.js'
        'patterns':[
          {
            'match': '\\.'
            'name': 'meta.delimiter.property.period.js'
          }
        ]

[MaximSokolov]

👍