Fix Issue #26 and add support for SonarQube 5.2 until last version 7.7-community

[fochoac]

Hello,
I have corrected issue # 26, please check.
Additionally, the plugin was configured to support all versions of sonarqube. This is intended to have no problems to obtain the actual date of the last analysis.

regards

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 8 committers have signed the CLA.

✅ fochoac
✅ charleston10
❌ Thomas Schuering
❌ Dutzu
❌ DonMartin76
❌ bradeac
❌ marius007
❌ markus2810

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