Release exporter looks for files in incorrect directory

[Nicklas Nordborg]

A side-effect of implementing ticket #981 causes the release exporter to look for released files in the incorrect directory.

Before the change a file in directory /1234567.1/l.r.m.c.lib.g was copied to /S000001/l.r.m.c.lib.g on the release server. After the change in #981 the source files are located in /12/1234567.1/l.r.m.c.lib.g which causes the release exporter to look for (and copy to) /12/S000001/l.r.m.c.lib.g.

This causes the release exporter to not find already existing files and it will make a duplicate copy. We do not want that.

We do not want to move files around on the release server either so the /12 prefix need to be removed.

[Nicklas Nordborg]

(In [4567]) Fixes #990: Release exporter looks for files in incorrect directory