Release prep for OJS 2.4.5
Add release notes for OJS 2.4.5
*8888* Remove HTML-based Selenium test framework
*8787* Publish initial issue and schedule intended submissions
*8864* Updating ToC fix.
*8741* fix due date after mailing an object
*8888* Rename constant
*8888* Add native export test
*8888* Submodule update
*8888* Added expected output (forgotten file)
Merge pull request #286 from bozana/ofr

*8741* fix due date after mailing an object
Merge pull request #285 from FourthAndVine/ojs-stable-2_4-8864

*8864* Updating ToC fix.
*8888* Fix export test with variables
Merge branch 'ojs-stable-2_4' of https://github.com/pkp/ojs into ojs-stable-2_4-Toronto

Conflicts:
	lib/pkp
	templates/issue/issue.tpl