Remove unneeded IEditorFactor::open re-implementations.

Change-Id: I261bc1ee09a2c22155e4874a4429a868d837c256
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: David Schulz <david.schulz@digia.com>
Move comment into the right place

Change-Id: I296de582b4ddb706d9f5f3f7092654b3f5d79e46
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
ProjectExplorer/QNX: Add build step for checking device existence

This introduces a DeviceCheckBuildStep which any DeployConfigurationFactory
could use to insert a step to check whether a device is set up for the
current kit or not. Currently only used in the QNX deploy configuration.

If there is no device known to a QNX kit, ask the user
to add one. Launch the appropriate device wizard if the user agrees
to add a device.

Change-Id: I42db995f50890e2a2dd7aacc24a0049cdd6a6fee
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>