small code improvement

fix for mevdschee#367

Fix for mevdschee#259

Fix for mevdschee#361

Merge pull request mevdschee#318 from carusogabriel/phpunit

Use PHPUnit\Framework\TestCase instead of PHPUnit_Framework_TestCase

Merge pull request mevdschee#333 from saraf/master

Correct 400 response to malformed json in POST

Merge pull request mevdschee#328 from matt194/master

Add a parameter expected by mysqli_error()

Merge pull request mevdschee#326 from saraf/master

Handle leading whitespace in JSON body

Merge pull request mevdschee#308 from xhorntail/master

Update api.php to fix API documentation

Merge pull request mevdschee#248 from karllhughes/master

Removing DBs as services