Restfox duplicate request parameters bug (0.3.0 Windows)

[benas-s]

Steps to reproduce:

• Press + button and create new request1 GET request to https://google.com
• Press + button again and create request2 GET request with query parameters: https://www.google.com/search?q=restfox
• Click on request1 tab
• Click on request2 tab and send request
• Inspect request2 response tab. Go to Request sub tab and notice that request parameters were repeated twice: GET https://www.google.com/search?q=restfox&q=restfox

Temporary workaround:

• Go to request2 Query tab and uncheck checkbox on variable

Bug is present for GET, POST methods, haven't checked other methods. Breaks Restfox usage.