Merge branch 'fix_open_contract_crash' into 'master'

[gui][c] Fix unmarshal when corrupted dfss json

Fix #10

See merge request !71
4 jobs for master
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  Test
passed #1695
golang lint
Code lint

00:16:10

passed #1694
golang mongo goqt
Integration tests

00:02:38

passed #1693
golang mongo strong
Unit tests

00:06:11

 
  Deploy
passed #1696
golang strong goqt deploy
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00:21:34