OBMFULL-4832 Fixed timezone definitions generation on CentOS
OBMFULL-4833 Fixed 'hack' for events ending at 00:00.

Long story:
* The hack is only applied when computing the full size of the event, not the size of a partial box.
Bumped POMs and UI to 2.4.2.4-rc2
Bumped packaging and changelogs to 2.4.2.4-0.rc2
Revert "Bumped POMs and UI to 2.4.2.4-rc2"

This reverts commit b8cfa1115602fca9100d12317e4245d1b3d91776.