[TASK] Add libraries to the software manual

- Add library module group to documentation
- Include circbuffer and hostif library in documentation
- Correct missing parameters and cleanup

Change-Id: I6f0046c606e21c2e1e73544a39f25614918b95e4
Reviewed-on: http://brateggevoat1/gerrit/1373
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Joerg Zelenka <joerg.zelenka@br-automation.com>
Reviewed-by: Wolfgang Seiss <wolfgang.seiss@br-automation.com>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[FIX] Fix wrong doxygen reference in obd.h

Change-Id: Ie177043ea9c88912cfb292ff3d00bfbc7fe12162
Reviewed-on: http://brateggevoat1/gerrit/1374
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>