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
cpu - stm32f4: add support for stm32f415rg
cpu - stm32f4: added support for more channels/devices in periph impls
cpu - stm32f4: removed reference to non existing .h file in stm32f415xx.h
board - msbiot: initial import for the msbiot
added changes of improved UART driver interface
added changes of improved GPIO driver interface
cpu - stm32f4: fixed error
boards - msbiot: fixed coding style