Added AnkiWeb template

Fixed fmedia

Changed the way how previews are generated to allow for {FrontSide} variable

Minor cleanup

Copy styles for preview into media dir.

Renamed notes/each's media to fmedia and fixed data

Fixed charset

Refactored field names to underscored

Added new way to split front and back sides of card templates.

Fixed fields discover

Fixed rendering in CrowdAnkiNot field plugin

Added dynamic fields to notes.

Fixed CrowdAnkiDecks worker plugin

Simplified "build" property, so that now it's just a plain path and buildName is borrowed from it; added automatic path resolution through the fileManager

Added preview mode for Anki! Just set "preview: true"