Prototype for mc_project_get_issues_assigned_to() webservice method.
Commented new method in filter_api.php
Support unassigned, reported by and monitored by.
Use case insensitive comparison for filter type and return only unresolved issues for assigned to filter.
Passed in user and project ids to config_get().
Fixed php error on my view page.
Added 10 test cases and a couple of minor fixes.
Added test case to make sure that assigned filter doesn't return resolved issues.
Use AccountData instead of ObjectRef for identifying target user.
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