Cleanup: move code-ref into plain sub.
(grafted from f713ca014eced6f08903a7150a1eb2fe7ae86665)

--HG--
extra : source : f713ca014eced6f08903a7150a1eb2fe7ae86665
Refactor inventory import routine. Now supports absolute and delta uploads.
(grafted from 3e75eef5d79939179de79a84f382a1215bb5dab9)

--HG--
extra : source : 3e75eef5d79939179de79a84f382a1215bb5dab9
Implement multi-date file imports.
(grafted from 19c40202f61db71fb36ded9d8092f100fb4900f7)

--HG--
extra : source : 19c40202f61db71fb36ded9d8092f100fb4900f7
Merge pull request #267 from ehuelsmann/master

Implement multi-date file imports