Implement changes to make the documentation build as
part of the rest of the Qt reference.

    - Use the global Qt documentation template
      (qt-module-defaults.qdocconf)
    - Use the standard doc namespace
    - Fix QML type selector
    - Remove buildversion
    - Rename index page so that it doesn't collide with Qt
      reference documentation

Change-Id: I241d685d70a52026a0fc38739643254151e5969a
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>
Reviewed-by: Pasi Keränen <pasi.keranen@digia.com>

Change-Id: If7a832e6be688dba021b8ee801df5e2e67f591d1
Reviewed-by: Sami Makkonen <sami.makkonen@digia.com>
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>
Reviewed-by: Pasi Keränen <pasi.keranen@digia.com>