Moved How-to topics into separate topics (HTML files) and
linked to them from UI Interface in QDS Manual and from How-to
in Qt Creator Manual.
Task-number: QTCREATORBUG-28996
Change-Id: I2b6defa936954c6a41085d0276f29942462ec12f
Signed-off-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
