Merge branch 'master' into testing

See merge request !2682

ds-media-library: Upload audio clip

See merge request !2678

it also calls decodeFunctionId which causes a lot of
warnings about invalid FunctionID

device-property-node: add more logging when removing device from property tree

See merge request !2680

Upload a user custom clip into dS Media Library.
dS Media Library has been extended with Create, Patch and Delete handlers.
Clip modifications are allowed only for the clips of USER category.
In order to upload clip and create a resource item in the dS Media Library,
we must first use the cgi-script `upload-clip.hs`. It handles the actual clip file
upload and puts it into the staging area in the `/tmp` directory.
As next we need to create a clip and provide the clip attributes.
The hanlder requires a clip name, category user, and exactly one resource,
where the uri points to the uploaded clip file in the tmp directory.
For security reasons we validate the base path of passed uri to make sure that
the handler will not modify the other system file or expose some sensitive
information.
When the requirements above are met, the handler will persist the clip attributes
and will move the clip from the staging area into the dS Media Library.
The user files are stored in subdirectory to allow easily distinguish them from
the preinstalled files that are not saved into backup.
We allow to update the clip name and the clip file. The new file should be uploaded
with the cgi script as well, then we should patch the clip uri with the path
to the new clip uploaded into tmp directory.

ds485types: dsuidToDsid supporting on the fly conversion

See merge request !2677

dsuid_to_dsid requires temporary variable

device-property-tree: bug/segfault: invisible devices have not property tree node

See merge request !2676

Allow changing of global states from addons

Closes DSD-10003

See merge request !2672

produced a segfault

powerline unparsed from roman

See merge request !2674

isInDsModel is called via DS_ASSERT in many simple functions
called from ApartmentStructurePoller during startup, when
devices are not yet fully discovered

Set button ID correctly when switching back to AKM input for GR-KL300

Closes DSD-10005

See merge request !2673

fixes DSD-10005

Differentiate SW-SKM300 AKM and button input mode

Closes DSD-9984

See merge request !2671

refs DSD-10003

refs DSD-9984

Mr kl300 icon path

See merge request !2669

Merge branch 'master' into testing

See merge request !2670