#80 Enable upload of JSON-mapped spreadsheets for experimental data

[Nina Jeliazkova]

Enable upload via multipart/form-data and POST to /substance or /bundle of JSON-mapped spreadsheets.

The JSON-mapped spreadsheet parser allows to specify substances (including nanomatwrials) and studies in user friendly XLSX files.

There is a command line tool for import directly into the database

[Nina Jeliazkova]

Implemented in 2.7.3-SNAPSHOT and 3.0.0-SNAPSHOT

The XLSX + JSON upload is enabled via /POST substance , see

/ui/uploadsubstance1 and
http://enanomapper.github.io/API/#!/substance_1/uploadSubstance .

Tested with the files available at https://github.com/enanomapper/nmdataparser/tree/master/src/test/resources/net/enanomapper/parser

TODO : the task should return bundle URI instead of the URL of one substance