dump.rdb added to .gitignore
PIDStore: refactoring initial release
Merge remote-tracking branch 'egarciag-github/pu-pidstore' into pu
scripts: demosite populate options

* Custom MARC file input for demo records;
* Starting bibsched job id;
* Extra info.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>