Change; fix; feature

* Remove some classes
* Rename some classes
* Add new classes
Change; remove; feature

* Rename some classes
* Remove some classes
* Add new classes
Change; feature

* Rename some classes
* Remove some classes
* Add new classes
Add new classes
Add new files
Add new files; change TExecuteCommandReplyData
Add copyright headers; update translations
TeXSample v2.0.0-beta

* Change copyright owner
* Use BeQt 4.0.0
* Add GPL headers to files
* Consider processor architecture in TClientInfo
* Rename CLab to CloudLab
* Remove Clab::MaximumInvitesCount constant
* Replace NoSuchUser message with InvalidLoginOrPassword message
* Make maximum invites count modifiable
* Fix QUuid serialization
* Add access level info to invites generation dialog
* Rename requests into operations
* Change main port to 9045
* Get rid of native Mac OS library format (Frameworks) - use UNIX-style libs
* Use Qt coding style, sort includes, class members, etc.
* Fix warnings for Qt4 when adding "concurrent" and "widgets" modules