This reduces chances of errors where consumers of strings mutate inputs
and reduces memory usage of the app.
Test suite passes now, but there may be some stuff left, so we will run
a few sites on a branch prior to merging
This gives installations not using git checkouts
to provide all the informations needed for the
internal version checks and version display in
the dashboard.
The build:stamp rake task was extended to also
add the new informations.