Customizable gender field

[reiterl]

Resolve #3803

Work in Progress, added internal logic and the list and dialog, the genders/gender fields still need to be replaced in the different code positions.

Needs an updated versions of:[

• Add new gender collection openslides-autoupdate-service#1025
• 2170 introduce gender model openslides-backend#2485

[reiterl]

Add subscription, relations, and AppConfig. Open are still filter, sort and import, and perhaps delete prompt.

[reiterl]

Needs an updated versions of:

• new gender model openslides-meta#116
• 2170 introduce gender model openslides-backend#2485

[Elblinator]

changed requirement in the CR:

• the checkboxes should stay where they are
• if a default gender is selected then the delete option is (with an explanatory tip) disabled

[reiterl]

Worked on the multiselect CR, I have excluded the edit /delete actions, disable the menu delete button if default genders are selected, and add a tooltip then.

[reiterl]

Some code cleanup and change of the title.

[Elblinator]

please leave merging to @rrenkert or @Elblinator
This PR and some others need merging in the correct order