Filter Box isue on pt_BR language

[lucasapaixao]

Make sure these boxes are checked before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Superset version

0.28.1

Expected results

A translation of filterbox chart

Actual results

When you apply the pt_BR translation in the Filter Box Chart, it crash with the following message:

PS: In English language does not occur the error

SyntaxError: [sprintf] unexpected placeholder
at http://10.18.200.102/static/assets/dist/explore.d3beaf73a661104a3627.entry.js:2:812937
at a (http://10.18.200.102/static/assets/dist/explore.d3beaf73a661104a3627.entry.js:2:813517)
at c (http://10.18.200.102/static/assets/dist/explore.d3beaf73a661104a3627.entry.js:2:64486)
at f (http://10.18.200.102/static/assets/dist/explore.d3beaf73a661104a3627.entry.js:2:64798)
at http://10.18.200.102/static/assets/dist/filter_box.885b5b9fd31f4d3caa48.chunk.js:2:365206
at Array.map ()
at t. (http://10.18.200.102/static/assets/dist/filter_box.885b5b9fd31f4d3caa48.chunk.js:2:364863)
at t. (http://10.18.200.102/static/assets/dist/filter_box.885b5b9fd31f4d3caa48.chunk.js:2:365985)
at Qi (http://10.18.200.102/static/assets/dist/vendors-major.4f5a17619ab655ae0e0c.chunk.js:2:1384797)
at Xi (http://10.18.200.102/static/assets/dist/vendors-major.4f5a17619ab655ae0e0c.chunk.js:2:1384639)

Steps to reproduce

1. Use the EN transalate and create a Filter Box chart
2. Modify the language to pt_BR(Brazilian Portuguese) and the Filter Box will crach.

Ps: Sorry for any translation error.

[lucasapaixao]

I found several invalid entries in files messages.json and messages.po, basicly i searched for string % s(with a space between the caracthers) and repacle for %s.
After the change i runned "pybabel compile -d translations" in superset folder and restart the daemon.

Reference for solution: 9044629

[mistercrunch]

Just a thought, we should have some sort of continuous integration validating these .po files...