Flask-DebugToolbar panel to show experiments and variations

[rkz]

Context

Many Flask developers use Flask-DebugToolbar to show the current request context, logs, ...

Goal

When loading GoogleOptimize, if the debug toolbar is enabled on app, add an "Experiments" panel to the toolbar with:

• the experiments running on the page
• their variations
• the Optimize IDs and human-readable keys
• a link to refresh the page on each variation (needs #2)

[rkz]

Workaround: use the "Request Vars" panel and check the cookie variables.