We must use getColumnLabel instead getColumnName.

MySQL doesn't return alias in getColumnName. It shouldn't brake Oracle because getColumnLabel returns name of the column if the alias hasn't been specified.
Merge pull request #110 from tauceti2/changeSQLname

We must use getColumnLabel instead getColumnName.
Fix of updateResource method privilegies

- there is only FacilityAdmin capable of use this method
Fix of attributes privilegies for VoAdmin on resourceAttrs
Merge pull request #111 from stavamichal/fixOfAuthorization

Fix of authorization
Add new role VoObserver

- add new Role VoObserver to object Role in PerunBeans
- add this role to all privilege tests (in core methods) where voAdmin has rights to read (get information)
Add new role VoObserver in AuthzResolverBlImpl

- add VoObserver to isAuthorizedForAttribute method
- Add voObserver role to isAuthorized method
Changes in methods get/setAttributeRights

- method setAttributeRights will aplicate the same rights for VoAdmin - Read and VoObserver - Read for the attribute
- Add information (javadoc) about behavior with VoObserver to the method getAttributeRights
- Add information (javadoc) about behavior with VoObserver to the method setAttributeRight
- VoObserver rights are special and are not returned by method getAttributeRights (changes in BlImpl)
Merge pull request #112 from stavamichal/newRole-VoObserver

New role vo observer