Update jquery.freepano.js

fix getFov() for portrait mode
Fix currentImage on initialization of the map
Update three.js library to r69 and remove unused shaders
Activate map by default
Fix map conflict with images having no geo coordinates
Geo coordinates can be set to null
Hide map per default if there is no markers available
Improve zoom in mapping
Limit zoom proximity to bounds
Minor zoom bounds change
Fix marker when initialImage is defined
Allow PanoList images to override the rotation matrix
Override settings can be defined but null
Store overrided settings to step back
Better handling of Leaflet container
Bind markerclick event
panorama.callback: add 'update' event
merge
poi: default mesh use basic material
jquery.freepano.js: fix tile loading