Fix the NPE if a single page is used to structure tests or assessment
course elements

OPENOLAT-211: new configuration mailFromDomain allowing mail from header handling depending on the sender and recipient mail address domains

Set the envelop-from from reply-to if smtp.from is not defined in
configuration (patch D. Haag)

OPENOLAT-602: in the memberlist coursenode move the email link from under the user properties to the right of the name link

OPENOLAT-602: set min width of .o_profile elements to prevent the table-cell rendering from deforming the profile images

To retrieve the min. score, max. score and the cut value, double check
if the resource is really based on QtiWorks otherwise fallback to the
old configuration. Fix an issue in statistics where the max. score and
cut value are retrieve from the wrong place. Cache the min. score and
max. score in the results list of the course assessed identities to
prevent reloading the values for every user.