* InvalidPasswordException.cs: Made changes necessary for having a
  common Core accessing a web service.
Made changes for integrating the services provided by the Central web
  service (user and service management).

* TMM.sln:
* Item.cs:
* User.cs:
* Frame.cs:
* Network.cs:
* .DS_Store:
* Service.cs:
* TMM_iOS.csproj:
* TmmManager.cs:
* TMM_Core.csproj:
* ServicesVisitor.cs:
* .DS_Store:
* .DS_Store:
* AccountScreen.cs:
* NewRssScreen.cs:
* AssemblyInfo.cs:
* RssFeedService.cs:
* CredentialsScreen.cs:
* EditRssScreen.cs:
* ViewRssScreen.cs:
* SelectFrameScreen.cs:
* Item.cs:
* Frame.cs:
* Network.cs:
* TmmManager.cs:
* Reference.cs:
* ServicesTableSource.cs:
* Reference.map:
* UnknownUserException.cs:
* Reference.cs:
* Reference.map:
* WrongPasswordException.cs:
* TmmService.wsdl:
* TmmService.wsdl:
* TMM.Core.iOS.Linked.csproj:
* InvalidPasswordException.cs:
* InvalidUsernameException.cs:
* ViewServiceScreenSelector.cs:
* EditServiceScreenSelector.cs:
* AboutResources.txt:
* Strings.xml:
* UserAlreadyExistsExceptionCore.cs:
* TMM.Core.Android.Source.csproj:
* Resource.designer.cs:
* Reference.cs:
* Reference.map:
* TmmService.wsdl:
* Reference.cs:
* Reference.map:
* TmmService.wsdl:
* InvalidUsernameException.cs: