* prep-release-3.0.13:
[prep-release-3.0.13] Correct changelog link to 3.0.13 changes.
[prep-release-3.0.13] Also update version in references to files.
[prep-release-3.0.13] Add changelog for 3.0.13-PL1 release.
[prep-release-3.0.13] Get rid of roman numbers in CHANGELOG.html.
[prep-release-3.0.13] Bump version numbers for 3.0.13-PL1 release.
Conflicts:
build/build.xml
phpBB/includes/constants.php
phpBB/install/database_update.php
phpBB/install/schemas/schema_data.sql