Better loging in synchronizer

 - need because of problem with timestamps comparing
Merge pull request #478 from stavamichal/addBetterLogMsgToSynchronizer

Better loging in synchronizer
Add new behavior for working with new attribute

 - new attribute is 'memberOfPerunVo'
 - attirbute is type of 'integer'
 - attribute is multivalue
 - Main method will generate these value for User objects
 - LDAPc will add and remove all these values by the same behavior like
   adding and removing value memberOf
Merge pull request #481 from stavamichal/ldapcNewAttributeMemberOfVo

Add new behavior for working with new attribute
Minor fix when removing attribute memberOfPerunVo from LDAP
Merge pull request #482 from stavamichal/minorFixToLdapcWhenRemovingMemberOfPerunVoAttributeValue

Minor fix when removing attribute memberOfPerunVo from LDAP
Order results from Auditer.getMessagesByCount

Audit messages returned by Auditer.getMessagesByCount are ordered by id
in descending order now.