[FIX] hr_expense: multi-currency

[nim-odoo]

• Set your company to USD
• Create an expense in EUR:
  Amount: 100
  Tax: 15% Excluded
• Validate, post the journal entries

Not a single AML is correct.

opw-1938570

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:

--
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[nim-odoo]

Test necessary

[nim-odoo]

@kebeclibre would you mind sharing your opinion?

Before the fix: https://screenshots.firefox.com/X91L4ANrHobH3WJX/localhost
After the fix: https://screenshots.firefox.com/DOx6b5wnIJY9AQDQ/localhost

[kebeclibre]

Ouch, indeed before the fix doesn't look good.
Fix seems okay, and screenshot after the fix too, provided that:

• the expense report has two entries for the Air Flight
• one of 100 taxed 15% ; in Euros
• the other of 700 taxed 15%; in Euros

I'd also recommend to write some tests

[nim-odoo]

robodoo r+

[robodoo]

Staging failed: ci/runbot (view more at http://runbot.odoo.com/runbot/build/445803)

[nim-odoo]

robodoo r+

[robodoo]

I'm sorry, @nim-odoo. This PR is already reviewed, reviewing it again is useless.

[nim-odoo]

robodoo r-

[nim-odoo]

robodoo r+

[robodoo]

Merged, thanks!