Merge branch 'feature/allow_pretreepath_arg_in_dofvectorview' into 'develop'

Added support for PreTreePath argument to makeDiscreteFunction/DOFVectorView

See merge request !66
4 jobs for develop in 21 minutes and 10 seconds (queued for 9 seconds)
Status Name Job ID Coverage
  Test
passed debian:10 clang-6-libcpp-17 #7322

00:21:10

passed debian:10 gcc-8-17 #7321

00:16:38

passed debian:9 gcc-6-14 #7323

00:13:25

passed ubuntu:18.04 clang-6-17 #7324

00:18:44