Resolve "Gene mapping upload progress counter freezes at 0 until upload finishes"

Closes #728 (closed)

added 15 commits

• 41b1e932...f6893d7d - 11 commits from branch master
• 6dce94b4 - validation errors are catched and passed to gui
• 507d149f - when invalid file is passed proper errors is thrown by rest api
• efd8fc39 - debug removed
• c0c051ba - refresh of progress is synchronized

Compare with previous version

unmarked as a Work In Progress

enabled an automatic merge when the pipeline for c0c051ba succeeds

merged

mentioned in commit fd364dd5