Small improvements

[aarranz]

Proposed changes

This PR makes some small changes to improve code quality.

Types of changes

• Refactor (non-breaking change which makes code more readable or maintainable)
• Bugfix (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 not work as expected)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

Further comments

N/A

[coveralls]

Coverage decreased (-0.01%) to 88.892% when pulling 9e79ac6 on aarranz:task/general-improvements into 8c8a7f4 on Wirecloud:develop.