online staff v5 final

Addon has been thoroughly tested against all possible scenarios,
and no flaws has been found within online staff v5 addon body.
Therefore online staff v5 is considered as ready for public release
and can be included as default plugin within Advanced Sidebox package.

Maintenance tasks performed as part of this update
* ensured full compliance with native asb core standards and guidelines.
* ensured compliance with common standards for php code formatting
* clean up code
* ensured reliability of online staff v5 addon by thorough test's.