GitLab

* Move bin folder to vendor/bin
* Adjust ddev and deployment to use the new bin folder
* Remove composer.typo3.org repository
* Use composer install --no-dev for deployment
* Use typo3/cms-core as dependency

* Usage of bootstrap v4-beta
* Usage of gridelements
* Changes templates to fulfill bootstrap standard

* New result list view
* Uses fluid for solr views
* Adds version support in indexer

Updates realurl and typo3_console as well
to be compatible

* Deletes composer.lock before each composer install
* Adds files to .gitignore

HowTo:
# Include static template t3olayout
# Go to data/typo3/html/typo3conf/ext/t3olayout/Resources/Private/
# Run "npm install"
# Run "grunt"

This reverts commit c23b4844.