Fix redirect to SQL Lab

[betodealmeida]

This PR fix a few things:

1. The SQL Lab redirect was not working correctly, since changes to the form controls were not being picked up. Instead, the auto-populated query corresponded to the saved chart, not the one being visualized.
2. The redirect code was using the URL interface without a polyfill. I changed the code to use uri.js, which is a dependency.
3. The error message was using the notify code that was removed. I changed it to use the chart alerting instead.

[codecov-io]

Codecov Report

Merging #5777 into master will increase coverage by 0.01%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master    #5777      +/-   ##
==========================================
+ Coverage   63.73%   63.74%   +0.01%     
==========================================
  Files         364      364              
  Lines       23090    23092       +2     
  Branches     2568     2568              
==========================================
+ Hits        14717    14721       +4     
+ Misses       8358     8356       -2     
  Partials       15       15

Impacted Files	Coverage Δ
superset/assets/src/chart/chartReducer.js	16.94% <0%> (-0.6%)	⬇️
superset/assets/src/chart/chartAction.js	50% <40%> (+3.22%)	⬆️

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[mistercrunch]

LGTM