[TASK] Rename MemberQuestion to Answer
[FEATURE] Remove unused frontend output for Question

On the frontend questions are only displayed within show member.
Therefore there is no need for the template and partial files. And the
actions can also be removed from configurePlugin in ext_localconf.php
[FEATURE] Remove unused frontend output (list) for Member

On the frontend members are only listed within show squad. Therefore there
is no need for the list tmeplate. And this action is also removed from
configurePlugin in ext_localconf.php
[FEATURE] Move squad output from partial to template file
[FEATURE] Move member output from partial to template file
[TASK] Rename Answer property from answer to text
[TASK] Rename Question property from question to text
[FEATURE] Make the answers accessible in member

Store all answers of a member in an ObjectStorage and provide getters and
setters as well as add and remove methods. Thus it becomes possible to
access and manipulate the answers of a member.
[BUGFIX] Fix type of image property in member model

Fix wrong type by changing it from \string to
\TYPO3\CMS\Extbase\Domain\Model\FileReference
[FEATURE] Add a dummy member image placeholder to the backend
[FEATURE] Upgrade dummy squad show template

Display the squad name and image.
And list all roles including their members.