CB-6957 Style improvements on Manual tests

Usage of info, which is wired a css class, aimed to only show results.
Reorganization of titles and tables.
Just organization of labes, and html elements.
Requires the changes on this PR:
https://github.com/apache/cordova-plugin-test-framework/pull/3

To get a better look.
CB-6957 renamed folder to tests + added nested plugin.xml
CB-7244 Updated version and RELEASENOTES.md for release 0.2.10
CB-7244 Incremented plugin version.
Merge branch 'master' of https://github.com/martincgg/cordova-plugin-battery-status
Merge branch 'CB-6957' of https://github.com/martincgg/cordova-plugin-battery-status