doc: fix most occurences of FU as an author

.. but only if there are other authors as well
Merge pull request #1490 from LudwigOrtmann/noauthor

doc: fix all occurences of FU as author
doc: some more author fixes

fix all occurences of INRIA as an author
correct Oliver Hahms authorship and indentation
Merge pull request #1491 from LudwigOrtmann/noauthor2

doc: some more author fixes
drivers: Provide basic interface for all network devices
drivers: Make general IEEE 802.15.4 driver part of net_dev
sys: Initial import of a general interface to a network protocol
sys: net: Initial import of a dummy MAC protocol layer
sys: transceiver: Provide an adapter to basic_net module

Since basic_net is aimed to replace tranceiver one day, but porting
efforts usally take a while, this commit aims to provide access via
transceiver as we are used to for radio/network drivers that already implement
basic_net (e. g. uart_net in #1454).
nativenet: Prepare for dummy_mac compatibility
[WIP] Add tests for dummy_mac (+ basic_net)