[vislibRenderbot] don't give the vislib empty chartData
[vislibRenderbot/buildChartData] fix failing test
fix error where field in URL is missing
Merge pull request #2164 from spenceralger/fix/2148

[vislibRenderbot] don't give the vislib empty chartData
Merge pull request #2176 from w33ble/redirect-fix

Visualize - redirect when field in URL is missing
Closes #2103 - Handling Rison exception for malformated urls
If we get an error then we will clean it up and replace it with the defautls
Merge pull request #2173 from simianhacker/fix-2103

Closes #2103 - Handling Rison exception for malformated urls