Taxonomy update with de-duplicated Timeseries cross-referencing, plus timeseries URI added to timeseried data.json.
New timeseries, presumably from the updated spreadsheet.
Added timeseries URI to timeseries data.json so that timeseries can be cross-referenced from different nodes in the taxonomy.
Merge branch 'taxonomy_sections' of github.com:ONSdigital/tredegar into taxonomy_sections
Merge branch 'master' into taxonomy_sections

Conflicts:
	src/main/taxonomy/businessindustryandtrade/internationaltrade/timeseries/ikbh/data.json
	src/main/taxonomy/businessindustryandtrade/internationaltrade/timeseries/ikbi/data.json
	src/main/taxonomy/businessindustryandtrade/internationaltrade/timeseries/ikbj/data.json
	src/main/taxonomy/businessindustryandtrade/tourismindustry/timeseries/gmat/data.json
	src/main/taxonomy/businessindustryandtrade/tourismindustry/timeseries/gmaz/data.json
	src/main/taxonomy/businessindustryandtrade/tourismindustry/timeseries/gmbb/data.json
	src/main/taxonomy/economy/nationalaccounts/timeseries/ikbj/data.json
	src/main/taxonomy/employmentandlabourmarket/peoplenotinwork/timeseries/mgsz/data.json