Statusdb is now independent 

With this PR, now the wrappers connecting to statusdb is pulled out from scilifelab repo. It does the same functionality like [this](https://github.com/SciLifeLab/scilifelab/tree/master/scilifelab/db) but as a separated module. I used the same codes and also only did minimal cleaning (due to time constraints). 

@pekrau  and @Galithil : I have tested installing it and also tried using this module to connect to statusdb. It works (nothing so obvious). 

**P.S: It is almost the same code as before I don't think it is necessary to go through whole code for review and also its crucial we have this ready in order to proceed with the report scripts**