Doc: move Class View plugin docs to .cpp files.

QDoc does not find docs in the .h files.
Use \brief only for namespaces, classes, enums, and properties.
Use standard wording for \brief and \fn.
Use \a and \c according to guidelines.

Fix grammar and style.

Change-Id: Ib685a03c97ef38661ecc156f61d70085514357fc
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

src/plugins/classview/classviewsymbolinformation.h

@@ -38,11 +38,6 @@
 namespace ClassView {
 namespace Internal {
 
-/*!
-   \class SymbolInformation
-   \brief Provides name, type and icon for single item in Class View tree
- */
-
 class SymbolInformation
 {
 public:
@@ -61,11 +56,6 @@ public:
             && type() == other.type();
     }
 
-    /*!
-       \brief Get an icon type sort order. Not pre-calculated - is needed for converting
-              to Standard Item only.
-       \return Sort order number.
-     */
     int iconTypeSortOrder() const;
 
 private: