Doc: edit qmldesigner designercore exceptions API docs

Do not use the \returns command as it does not exist.
Do not use the \arg command (use \a instead).
Do not use the \see command (use \sa instead).
Remove \brief command from function descriptions for
consistency (as it is optional).
Fix punctuation, style, and grammar issues.

Change-Id: I10d18ef05d4116730796f4d003010d78b44a6138
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
Doc: edit qmldesigner designercore API docs

Do not use the \returns command as it does not exist.
Do not use the \arg or \param commands (use \a instead).
Do not use the \see command (use \sa instead).
Remove \brief command from function descriptions for
consistency (as it is optional).
Fix punctuation, grammar, and style issues.

Change-Id: I11173b84146cccf7fe9ba29a521cea93e03a4424
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
Doc: edit qmldesigner designercore model API docs

Do not use the \returns command as it does not exist.
Do not use the \arg command (use \a instead).
Do not use the \see command (use \sa instead).
Do not use the \name command (could use \ingroup, instead)
Remove \brief command from function descriptions for
consistency (as it is optional).
Fix punctuation, grammar, and style issues.
Remove obsolete documentation and fix function signatures.

Change-Id: I0bff8c00aefdcff451b2d1cefe8b99407bfb4222
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
Doc: move documentation from header to source file

QDoc does not look for documentation in header files.

Change-Id: Id7f6a44112e2385989b62a9dd2ee3a18e0c0ff7b
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>