Merge pull request #79 from matejonnet/master

Store build to datastore.
Specification by Example
Merge pull request #78 from slaskawi/specification_by_example

Specification by Example
Revert "Specification by Example"
Merge pull request #80 from project-ncl/revert-78-specification_by_example

Revert "Specification by Example"
Merge pull request #81 from matejonnet/master

Start up queue processor.
REST interface for getting build results
Merge pull request #82 from slaskawi/REST

REST interface for getting build results
Fixed swagger documentation on legacy endpoint
Merge pull request #83 from slaskawi/REST

Fixed swagger documentation on legacy endpoint
Added transactional context to Datastore
Merge pull request #84 from slaskawi/fix_transactional_context

Added transactional context to Datastore
Fix build status
Merge pull request #85 from slaskawi/fix_transactional_context

Fix build status
Fix error handling.