ValueError in storescp with Kodak illegal use of mulitple values with comma

[Ed McDonagh]

As per #137, but this time in OnReceiveStore.

Causes all Carestream images with the copper and aluminium filter to fail to be written to disk, and thus are not imported.

[Ed McDonagh]

Changed name of variable to hold the DICOM object to be saved - was the same as the incoming object but lower case. Sort of refs #338

→ <<cset 33dbda6ecd35>>

[Ed McDonagh]

Changes KODAK filter thicknesses when multiple materials are used to be presented in a legal fashion. Inelegant, but fixes #338

→ <<cset 933725d36d7b>>

[Ed McDonagh]

Merging ref #338 back into develop.

→ <<cset d9ebc5cc6988>>

[Ed McDonagh]

Adding refs #338, #328 to changes

→ <<cset b32a5a2a4f0a>>