Added absolute residual tolerance option
Updated configs for webdemo examples
Added missing comma to json file
Attempt at passing iteration stop epsilon
Another attempt
Yet another go
Another go
Bugfixes examples
 The visualizer only supports visualizing things which live on AllFaces() at the moment: Removed fluxes
 Added outputting initial conditions for heat equation example
 Removed "bug?" in xtk.js when all elements are equal.
 Changed physical parameters for 2d heat equation
Merge pull request #39 from babrodtk/master

Updated examples