* do not extend obsolete vufind factory - now plugin

* devops info:
** run "./install-codestylechecker.sh install" to install dependencies for git hooks code style checks
** see https://projekte.ub.uni-leipzig.de/projects/finc-intern/wiki/Code-Quality-Checking_mit_PHPStorm#section-5 for integration of CS Fixer validation in PHPStorm
* $HOME/bin/codestylechecker/php-cs-fixer3 fix --config=$HOME/bin/codestylechecker/vufind.php-cs-fixer.php_cs module/fid/src/
* add missing class and method comments
* move view helper classes to correct directory
* run codesniffer-beautifier for modules and templates

co-authored by: Dorian Merz <merz@ub.uni-leipzig.de>
co-authored by: Alexander Purr <purr@ub.uni-leipzig.de>

* vendor/bin/phpcbf --standard=tests/phpcs.xml module/fid/
* vendor/bin/php-cs-fixer fix --config=tests/vufind.php_cs module/fid
* using PHP_CodeSniffer 3.6.2 instead of 3.4.0 (squizlabs/php_codesniffer)

* from now on, if a set of fidis permissions is configured,
  users having ANY of those will be granted the respective VuFind permission
* potentially BREAKING CHANGE

* bugfixes in Permission handling
* admin link in MyResearch menu

* adds actions and routes to
** user list
** user profile manipulation
* introduces basic authorization and permission handling

* introduces Admin config section containing
** editable fields
** applicable user permissions
** disable select inputs

* user overview
** styles user overview as a table
** links to user edit page for each

* adds 'denied' values for unselected permissions

* force login for admin pages
* flushes user list cache on successfull edit
** displays latest data in user list

* reacts on admin roles from API (cf. #15692)

* VuFind permission handling
** adds PermissionProvider to handle FID API permissions via Permission ViewHelper