Vector layers style in Globe view

[baloola]

Currently, it is not possible to map the OpenLayers style from the eoxMap config into the OpenGlobus vector layer. We probably need to be able to translate the whole logic into OpenGlobus.

As a starter, we can limit our support to the :

• normal css colors ( e.g rgba(255,255,255,0.6))
• "get" expression (so something like 'fill-color': ['string', ['get', 'COLOR'], '#eee']).