Use enum instead of hardcoded numbers in LDAP operations

- instead of (1,2,3) use new enum LdapOperation for add, remove and replace
Merge pull request #148 from stavamichal/Ldap-enum-for-modify-actions

Use enum instead of hardcoded numbers in LDAP operations
Remove creating facadminVo from initialize method

- remove code with creating facadminVo from initialize method in FacilitiesManagerBlmpl
- remove initialize method from FacilitiesManagerBl/BlImpl
- remove calling initialize method of FacilitiesManagerBl from initialize method of PerunBlImpl

Comment: Spring did not call initialize method of FacilitiesManagerBlImpl, he called initialize method of PerunBlImpl which after that called initialize method of FacilitiesManagerBlImpl.
Merge pull request #149 from stavamichal/remove-creating-facadminvo-from-initialize-in-facilitieManagerBlImpl

Remove creating facadminVo from initialize method