moved test datasets within the testcase directory structure to ease filepath resolution.
updated phpunit configuration: dropped obsolete ILIOS_TEST_ROOT_DIR constant. enabled color output. added protocol to dummy value for ILIOS_TEST_USER_SYNC_EDS_HOST constant
updated CI bootstrapper script.
added phpunit bootstrapper script that adds the tests base dir to the includes path before any tests are run.
code cleanup: shortened include paths, removed obsolete constants definitions, updated code docs.