Incorrect project-specific where clause

If user has access to only one project (or if there is only one project
in bug tracker), helper_project_specific_where() function returned an
incorrect where clause when $project_id == ALL_PROJECTS.

Fixes #17073
Fixes #17076: Issue history show date submitted and last updated as integers rather than dates.
Whitespace
Fix phpDoc for mc_project_get_id_from_name()

project_get_id_by_name() returns 0 when project is not found, not -1
SOAP tests: improved bootstrap file

New available options
- user name, password and e-mail
- project id

Comments have been added to bootstrap.php.sample file.
Merge pull request #45 from mantisbt/master

pull from origin master