Update examples to match compiler output.
Keep just one, canonical heat equation example.
Modified twophase example with units.
Rewrite constants in example for readability.
Add missing comparison operators for backend.

Also reorder existing ones to have a sensible order.
Update output to match updated examples.
Remove some obsolete examples.

Also remove example output.
Update example output after changing example.
Fix example to account for units.
Use explicit list of non-dimensional examples.

The examples listed will be compiled with the --nondimensional option.
Merge pull request #35 from atgeirr/fix-examples

Fix examples
Added support for units in web interface
Also removed extra files that are auto-generated.
Added support for multi-line error messages (not robust)
Merge pull request #36 from babrodtk/master

Dimensions in web gui
Added web demo update script.
Updated web demo bootstrap script.
Added initial conditions for the 2d heat equation example.
Updated bootstrap script, update script, and added unautogenerated files to .gitignore
Merged bootstrap and update scripts
Merge pull request #37 from babrodtk/master

2d heat and bootstrap
Bugfix for previous pull request
apt-get update is needed for apt-get to get the right url for software-properties-common
software-properties-common is required for apt-add-repository.