New endpoint and build configurations

[lzy7071]

1. All builds are now done on circleci before deploying to Netlify. Netlify builds is disabled.
2. Changes to CircleCI workflow, where testing and building are now separated since Netlify requires manual publishing. This avoids timeout errors on CircleCI preventing deployment of builds.
3. Depending on BUILD_ENV variable, the final build uses different API endpoints.
4. MetaboliteSearchResultsList.js and ReactionSearchResultsList.js now take advantage of the projection functionality built into ftx/text_search/num_of_index/?includes={}&excludes={} endpoint.

[coveralls]

Pull Request Test Coverage Report for Build 0b59d113-5f1c-4c40-95e0-a20be9bd00e3

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.1%) to 77.126%

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Files with Coverage Reduction	New Missed Lines	%
src/services/RestApi.js	1	87.5%
<!--	Total:	1		-->

Totals
Change from base Build ff2b67cc-cd45-43d7-b957-9a38f45d00a0:	0.1%
Covered Lines:	1843
Relevant Lines:	2245

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💛 - Coveralls