Merge branch 'cleanup/installscript' into 'master'

Cleanup/installscript

Closes #848

See merge request !1965

(cherry picked from commit 7a6fd6d4)

acaf8100 [install] move and modify installscript
b0775e20 [install][handbook] Modify the description of the quick install
14914915 [install][external] Add install course and lecture as options
204468d5 [bin][install] Fix several issues with installdumux.sh script
ed7e6247 [install] add check for existing cmake.opts file