RMV: Remove ExtendedIfViewHelper
ADD: add template and typoscript for link filter
CHG: Hide the select filter label element if no label is defined
Merge branch 'develop' of gitlab.pluspunkthosting.de:pt/pt_extlist into develop

* 'develop' of gitlab.pluspunkthosting.de:pt/pt_extlist:
  ADD: add template and typoscript for link filter
FIX: optionsSqlQuery only trim if it is no array
FIX: reset session data in method loadLifeCycleManager
ADD: display cond for plugin type and export tab
CHG: flexform config - use only one tab, get filter and pager configs by list identifier
ADD: reload when choosing filter config
TASK: Minor formatting changes
Merge branch 'develop' of github.com:punktDe/pt_extlist into develop
Merge branch 'develop' of gitlab.pluspunkthosting.de:pt/pt_extlist into develop
CHG: unify all condition to not confuse the user if he switches plugin mode
Merge branch 'develop' of gitlab.pluspunkthosting.de:pt/pt_extlist into displayCond
[TASK] Removed unused ?> at end of ajax stub
Merge branch 'develop' of gitlab.pluspunkthosting.de:pt/pt_extlist into develop
CHG: improve code style
FIX: double code (because phpStorm)
Merge branch 'develop' of gitlab.pluspunkthosting.de:pt/pt_extlist into displayCond
CHG: Filter value data provider are now instantiated using the object manager