Inconsistent info on table columns

[olejandro]

Examples in reeem_db_plot_TIMESPanEU.ipynb contain info about available columns. However this info is inconsistent and therefore can be confusing. For example:

1. column = 'pathway' # id, pathway, version, region, year, indicator, category, value, unit
2. column = 'framework,pathway,version,updated' # id, pathway, version, region, year, indicator, category, value, unit
   It would be good to have more consistency between 1) and 2), e.g. framework should appear in the out-commented part of 1).