Add SOAP GetServicesUsage method

Change-Id: I2803169412feb5f6cbbd2bbfeb0e3678c66ee6ec
Add verifications for getServicesUsage SOAP method
    * Project exists
    * User is admin

Change-Id: I42662fed3a179e3fda8c50fac008fa984470f39b
Add activateService SOAP method

Change-Id: I914c744257a100cced34c0fd05897bd5c13a8151
Add deactivateService SOAP method

Change-Id: I8036497f9017e4f5b4af6ab229f04e70122c909a
Modify changelog and increase version number

Change-Id: I2b761c614a824537f0a7c9db107228582c685ddd
Merge remote-tracking branch 'gerrit/4212_SOAP_manage_project_services' into HEAD

* gerrit/4212_SOAP_manage_project_services:
  Modify changelog and increase version number
  Add deactivateService SOAP method
  Add activateService SOAP method
  Add verifications for getServicesUsage SOAP method     * Project exists     * User is admin
  Add SOAP GetServicesUsage method

Change-Id: I419ded329bbe87d2b777cc157dc2cedf7cad6de6
This is Tuleap 6.4.99.4

Change-Id: I849519a40ec4c7b3836b09f857ab336692176d26