Remove collapsible on create offer

[pedronunes19]

Offer Creation Advanced Settings are no longer on a collapsible section. Closes #307

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 89.12%. Comparing base (33eb94b) to head (dfc85ff).

:exclamation: Current head dfc85ff differs from pull request most recent head 653f698. Consider uploading reports for the commit 653f698 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #328 +/- ## =========================================== - Coverage 89.15% 89.12% -0.03% =========================================== Files 177 177 Lines 3438 3429 -9 Branches 869 863 -6 =========================================== - Hits 3065 3056 -9 Misses 373 373 ```

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[pedronunes19]

Works on my machine

[pedronunes19]

Works on my machine

Update: it does not