Merge branch 'feature/data_transfer_dof_admin' into 'develop'

Add a Manager class for GridTransfer with automatic registration of DOFVectors

See merge request !52
4 jobs for develop in 20 minutes and 16 seconds (queued for 7 seconds)
Status Job ID Name Coverage
  Test
passed #7399
debian:10 clang-6-libcpp-17

00:20:15

passed #7398
debian:10 gcc-8-17

00:16:04

passed #7400
debian:9 gcc-6-14

00:14:00

passed #7401
ubuntu:18.04 clang-6-17

00:18:19