*7669* Prevent subeditors from viewing archived submissions
Merge branch 'master' of github.com:MichaelThessel/pkp-lib
Merge branch 'master' of https://github.com/pkp/pkp-lib
*8279* Re-introduced log in as functionality
Merge branch 'master' of https://github.com/pkp/pkp-lib
Created abstract validation class
Changed log in as code to reflect new Validation::canAdminister() API
Merge branch 'validation' of github.com:MichaelThessel/pkp-lib into validation
Corrected spelling and reference assignment