Loading from amazon by default, now changing image loading method to XMLHTTPRequest

The database update command necessary to get this working is
"db.images.find({ webPath: {$exists : true}}).forEach(function (doc) {
var amazonPathArray = doc.webPath; for (var i=0;
i<amazonPathArray.length;i++){ var cs = amazonPathArray[i];
amazonPathArray[i] =
cs.replace("/data/","https://s3.amazonaws.com/nemaload.data/web_data/");
 } db.images.update({_id:doc._id},{$set:{"amazonPath":amazonPathArray }
} ); } );". To use local data, use the command
"Session.set(“useAmazonData”,false);" in the Chrome console.
Merge branch 'master' of https://github.com/nemaload/HDFWeb

Conflicts:
	meteor/client/templates/webgl/webgl.js
data: Remove *again*
.gitignore: Tidy up, +meteor/data as that's local-only
Header: Add a switch for useAmazonData to the navbar
.gitignore: Ignore vim swap files
Consolidate all global variables related to lightfield image/3d rendering in an lf object
setRectangle(): Move from lf-render.js to webgl-common.js
Change all lightfield-specific functions to methods of new class LightFieldRenderer (instantiated as lf)
Merge branch 'master' of github.com:nemaload/HDFWeb into davidad_dbdump