[examples.linearelliptic.OS2014] add alpha and gamma
[examples.linearelliptic.OS2014] add bindings for alpha and gamma
[examples.linearelliptic.OS2014] do not compute discretization errors
[examples.linearelliptic.OS2014] only run one product/norm combo
[examples.linearelliptic.OS2014] collect estimator data
[examples.linearelliptic.OS2014] update simdb usage (only one identifier)
[examples.linearelliptic.OS2014] some settings