[Task #2797]: fixed endpoints calls to open saiku in pentaho5
[CLEANUP]: license update and style check
[Task #2797]: plugin saves and edits queries in pentaho5
[CLEANUP] removed OlapApi from plugin and license/code style review
[Task #2797]: Groups loading with correct labels and csv exporter fixed
[Task #2797]: plugin refactoring complete
Merge pull request #4 from davidmsantos90/core-refactor

Task #2797 cdb Core refactor