Merge old econdata into core data

[rufuspollock]

From 2005-2009 I worked on the Open Economics project at Open Knowledge and accumulated various datasets:

https://github.com/okfn/econ/tree/master/econdata

We should merge all of these into here.

TODO: check what has already been processed and where it is ... (e.g. quite a few are done)

• [ ] bls/usa_bls_employment/ -> employment-us
• [ ] browser_stats -> https://github.com/datasets/browser-stats
• [ ] ciafactbook ->
• [ ] copyright_registrations_us -
• [ ] early_modern_agricultural_prices
• [ ] econ_article_counts
• [ ] eh.net-finance
• [x] gold_prices -> https://github.com/datasets/gold-prices
• [ ] hamburg_income_distribution_1890
• [ ] hard_drives - https://github.com/rufuspollock/hard-drive-prices
• [ ] mdg
• [ ] music_sales
• [ ] patent_values_distribution
• [ ] penn_world_table
• [ ] place-ii
• [ ] shiller_stock_market_data
• [ ] thatcher_wages_middle_ages
• [x] uk_house_prices -> https://github.com/datasets/house-prices-uk
• [x] uk_interest_rates -> https://datahub.io/core/interest_rates-gb
• [ ] uk_patent_counts_1660-1799
• [ ] uk_population_historical
• [ ] uk_price_index_1850-2002_annual
• [ ] ukgov_finances_cra
• [ ] ukgov_finances_pesa
• [ ] ukgva
• [ ] us_population_historical
• [ ] wheat-us
• [x] world_population_historical -> https://datahub.io/core/population-global-historical

[Mikanebu]

world_population_historical and uk_interest_rates are published: https://datahub.io/core/population-global-historical, https://datahub.io/core/interest_rates-gb

[rufuspollock]

@Mikanebu could you add a link to where they are published

[Mikanebu]

@rufuspollock I updated issue itself with links next to dataset

[rufuspollock]

@Mikanebu ok, but please can you paste them when you comment too - that saves me having to scroll around.