*8684* Moved signIn/OutAsUser code to shared library
Merge pull request #157 from MichaelThessel/8684_sign_in_as_to_pkp_lib

*8684* Moved signIn/OutAsUser code to shared library
*8582* include sections before articles in export, add fields
*8582* implement issue/article/section/issue galley import (article galleys coming)
*8582* add support for issue cover image import
*8582* add support for issue style file import
*6902* Remove unnecessary subclass extensions
Submodule update
*8582* re-enable filter for article galley import
Scrutinizer cleanup; remove deprecated plugins
Scrutinizer cleanup; remove deprecated plugins
Scrutinizer cleanup
Scrutizinier tweaks
Scrutinizer tweaks
*8582* use correct variable
Scrutinizer cleanup
Scrutinizer tweaks
Scrutinizer config work
Scrutinizer updates
Share installation code; introduce base class