Refurbish dumux start/end messages (FS#170): Introducing a selection of...

Refurbish dumux start/end messages (FS#170): Introducing a selection of various quotes, that are displayed before and after the simulation run.
Reviewed by Nicolas

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@10057 2fb0f335-1f38-0410-981e-8018bf24f1b0