Rename employment variables to "Labor Force" category

[danielhuppmann]

As a follow-up to #57, this PR renames the Employment/Unemployment variables from the population-category to a new top-level category "Labor Force".

@IAMconsortium/common-definitions-macro-economy, looking at the description of the variables introduce in #57, it said that "Not Active" are people outside of the working-age range. However, this definition states that "Outside the Labor Force" includes all people not actively looking for work, which may include working-age people.

Please clarify or make your categorization complete by adding a category for inactive people of working age.

[danielhuppmann]

Ping @FlorianLeblancDr, please double-check whether the description of "Not Active" should be changed to be in line with ILO definitions.

[FlorianLeblancDr]

Hi Daniel,
Sorry for the long delay.
Thanks for checking, indeed Inactive does not only means not being at the age of working according to the ILO.

I made some edits.

I will see later if those definitions are robust to several definitions of unemployment (more for tier 2 / 3 var.)

[danielhuppmann]

Thanks @FlorianLeblancDr - just to be clear, you wrote "I made some edits", but it's not clear to me where you made them?

[FlorianLeblancDr]

@danielhuppmann Directly on Github here:
https://github.com/IAMconsortium/common-definitions/pull/94/files
File labor-force.yaml

Edit: I did not click on 'submit review' sorry for this.

[danielhuppmann]

Thanks @FlorianLeblancDr, there was some formatting mix-up in your suggestions, so I revised them a bit further. Please approve if this is ready to be merged (a.k.a. good enough for now).

[FlorianLeblancDr]

All good to me, thanks for the edits @danielhuppmann