Fix installer
Moved abort into PKP lib; fixed message reporting
Merge pull request #38 from MichaelThessel/master

*7669* Implemented submissions archive
Fix upgrade
Remove old PHP requirement
Fix duplicated English locale content and server requirements text
Fix hard-coded OMP link
*8275* Move site administration out of guessed context
Tweaks
*8153* use paging on grids, move logic into SQL for submission queue where possible
*8276* Move registration to PKP lib
Conventions
*8276* Centralize registration form
*8276* Centralize registration
fix constructor name
remove unused function parameter
Fixed validation of select required attribute
Fix reset of 'rich' attribute
Add missing extras-on-demand IDs; fixed non-rich mailing address
*8115* Removed old help code