Add ISM Manufacturing PMI index menu items via DBnomics data provider…

… to U.S. Economics source-menu.json

data/db-nomics/ism-buypol.json

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+{"items":[{"c":"Capital Expenditures; 30 Days","v":"caex-30da"},{"c":"Capital Expenditures; 60 Days","v":"caex-60da"},{"c":"Capital Expenditures; 90 Days","v":"caex-90da"},{"c":"Capital Expenditures; 6 Months","v":"caex-6mo"},{"c":"Capital Expenditures; 1 Year+","v":"caex-1ye"},{"c":"Capital Expenditures; Average Days","v":"caex-avda"},{"c":"Capital Expenditures; Hand-to-Mouth","v":"caex-hamo"},{"c":"MRO Supplies; 30 Days","v":"mrsu-30da"},{"c":"MRO Supplies; 60 Days","v":"mrsu-60da"},{"c":"MRO Supplies; 90 Days","v":"mrsu-90da"},{"c":"MRO Supplies; 6 Months","v":"mrsu-6mo"},{"c":"MRO Supplies; 1 Year+","v":"mrsu-1ye"},{"c":"MRO Supplies; Average Days","v":"mrsu-avda"},{"c":"MRO Supplies; Hand-to-Mouth","v":"mrsu-hamo"},{"c":"Production Materials; 30 Days","v":"prma-30da"},{"c":"Production Materials; 60 Days","v":"prma-60da"},{"c":"Production Materials; 6 Months","v":"prma-6mo"},{"c":"Production Materials; 1 Year+","v":"prma-1ye"},{"c":"Production Materials; Average Days","v":"prma-avda"},{"c":"Production Materials; Hand-to-Mouth","v":"prma-hamo"}]}

data/db-nomics/ism-index-ab.json

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+{"items":[{"c":"Index","v":"in"},{"c":"% Too Higher","v":"tohi"},{"c":"% About Right","v":"abri"},{"c":"% Too Lower","v":"tolo"},{"c":"% Reporting","v":"re"},{"c":"Net","v":"ne"}]}

data/db-nomics/ism-index-fa.json

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+{"items":[{"c":"Index","v":"in"},{"c":"% Faster","v":"fa"},{"c":"% Same","v":"sa"},{"c":"% Slower","v":"sl"},{"c":"Net","v":"ne"}]}

data/db-nomics/ism-index-re.json

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+{"items":[{"c":"Index","v":"in"},{"c":"% Higher","v":"hi"},{"c":"% Same","v":"sa"},{"c":"% Lower","v":"lo"},{"c":"% Reporting","v":"re"},{"c":"Net","v":"ne"}]}

data/db-nomics/ism-index.json

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+{"items":[{"c":"Index","v":"in"},{"c":"% Higher","v":"hi"},{"c":"% Same","v":"sa"},{"c":"% Lower","v":"lo"},{"c":"Net","v":"ne"}]}

data/db-nomics/ism-pmi.json

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+{"items":[{"c":"PMI","v":"pm"}]}

data/db-nomics/ism.html

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+<div class="descr-datasource">
+<p>
+<a href="https://db.nomics.world">DBnomics</a><br/>
+The world's economic database,
+contains data from 90 providers.
+</p>
+<p> 
+<a href="https://www.ismworld.org/">ISM</a><br/>
+Institute for Supply Management 
+is the first and largest not-for-profit
+professional supply management 
+organization worldwide.
+</p>    
+</div>