Db setup and management

Description

Its preliminary results:

• DB Schema was slightly changed, new version on the figure below
• Tasks from the related Issue #148 (closed) were done
• New test added to check the functionality of db_loader tool

But during this refactoring were raised a few new questions that should be addressed:

• Make available automatic processing of all data tables (optical_throughput and all from atmosphere) and attach appropriate metadata in helper methods from TableHandler class
• Fix the tests from calibpipe/src/test/unittests/database/test_metadata.py to count on new DB schema and all data tables, not only atmospheric
• Add possibility to fill the DB with some dummy data in the new CalibPipeDatabaseCreation tool
• Add ContextMetadata and FixityMetadata tables

Commits

• New config structure uploaded

• Tool for creation calibpipe DB

• DB creation methods moved to the proper class

• New foreign keys

• Make DB tables names all in low register as mmetadata table names

• Unified container naming and foreign key fields

Related Issue

Close #148 (closed)

New DB Schema

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.