Prepare release 1.8.1

Prepare release 1.8.0

Release 1.7.3

Prepare 1.7.2 release

Prepare 1.7.1 release

Prepare 1.7.0 release

Merge pull request #85 from btommboy/master

add db connection to module settings

Merge pull request #77 from moltam/feature/multiple-root-scan

Add multiple root directory scan

Merge pull request #72 from moltam/docs/known-issues

Added 'Known issues' section

Remove categoryPrefix from tables.