PIM related documentation should not talk about Qt PIM as a single add-on module

The documentation talks about the Qt PIM add-on module: http://doc-snapshot.qt-project.org/5.0/qtpim.html

However, the PIM area is a collection of modules that feel separate in the code (e.g. different .pro file QT variable usage). So it would be clearer if this document would explain the Personal Information Management area in general but not refer to it as a single add-on module.

See also http://qt-project.org/wiki/Spelling_Module_Names_in_Qt_Documentation