This reverts commit 111919f5

As noted by @jm in nexedi/wendelin!160 (comment 199327)
'self.tic() automatically commits first'. So let's drop redundant code
in tests.

Needed after 85b18536
(uses old XML format which breaks codign styles tests)

See merge request nexedi/wendelin!158

levin: This cherry-picks the latest version of the
'DataAnalysis_clearAndReprocessFromScratch' script from a customer
project. It's needed to successfully run the 'refresh' workflow [1]
and was perhaps forgotten to be added in nexedi/wendelin!31.

[1] https://lab.nexedi.com/nexedi/wendelin/blob/04787344/bt5/erp5_wendelin/SkinTemplateItem/portal_skins/erp5_wendelin/ERP5Site_executeDataAnalysisList.py#L37

Fix.

context) have this format.

sensor.product

Thus be consistent also here for Data Streams' reference.

(https://wendelin.nexedi.com/wendelin-HowTo.Create.Notebook.with.Plotly.Chart.Editor/wendelin-Poltly.Chart.Editor.4?format=)

See merge request nexedi/wendelin!159

See merge request nexedi/wendelin!157

- The business template is used to process drone log data and give a score to each simulated drone flight. The best five drone flights and their parameters are displayed in a notebook.

- Added ingestion policy in the erp5_wendelin_drone business template for Data Bucket Streams.

- Added a notebook for visualization of data with a short description of the project.

- Added tests for this business template, which can be used to dynamically generate new data (mock data).

See merge request nexedi/wendelin!156

See merge request nexedi/wendelin!153

See merge request nexedi/wendelin!152

This reverts commit e6f7b0097f7c27109fd61c1692c3588b625bd90e.