create a warning message in case of blocked account
create a warning message in case of blocked account

 
TODO IN GENERAL:
   1)  The blocking could be changed only ADMINISTRATOR
   2) we have to make a decision how we can get a link between user John 
      and clientID, i.e we've got a user John who is authorised on a web-server. 
      We have to link it with clientID (maybe we use a session?)
      PART VII: SECURITY http://docs.oracle.com/javaee/6/tutorial/doc/gijrp.html 

TODO for logic for adding money:
   1)create a pattern for ONLY ADD money, not subtraction, which means
     user allows to write only + not -
Evegen55/WebTask,Evegen55/WebTask