Ignore validation of extension model in transferAction

See merge request !376

Update Solr extension to 7.5.3

See merge request !377

Due to often incomplete extensions which are transferred, we do not need
this validation.

Merge branch '366-oops-an-error-occurred-on-https-extensions-typo3-org-extension-event' into 'develop'

Replace old class names

Closes #366

See merge request !374

Add flushing caches after successful extension import

Closes #365

See merge request !373

Add support for 9 LTS in results and detail view

See merge request !371

Add composer package name into detail view

See merge request !369

* Show composer how to install
* Click to copy to clipboard

Update ddev to 1.2.0

See merge request !368

Resolve "Also show version history when extension only has one version"

Closes #363

See merge request !367

Update TYPO3 CMS to 8.7.18

See merge request !366

Update t3olayout to 3.1.1

See merge request !364

Throw an extension when upload with empty upload comment

See merge request !363

* Casts uploadComment to string before writing in DB

Introduce test build and fix CGL issues

See merge request !360

Resolve "Replace placeholder in composer package with directly input"

Closes #358

See merge request !354

Update ddev to 0.20.0, update LocalConfiguration and install ldap php module in container

See merge request !362