Merge pull request #82 from vboctor/standard_filters

Fixes #15807: Support standard filters like ones in My View page in SOAP API

Implemented mc_project_get_issues_for_user() that supports the following:

Assigned To User (or 0 for unassigned)
Reported By User
Monitored By User

Signed-off-by: Damien Regad <dregad@mantisbt.org>

Ported to master branch with modified filter constants, as per commit
c42ac127bd05851d62a9ab912229d8c279f760c9.

Conflicts:
	my_view_inc.php

Other changes:
	core/filter_api.php
Documentation: added missing closing tag