Add VoteWeight documentation and translated search for detail poll view

[anbebe]

Closes #4289
Closes #4301

[Elblinator]

The vote weight is displayed mostly as expected and the translation is working fine.

There is an unclear case where the wanted behaviour is not completely clear:
If a motion poll was nominal and then was anonymized:
Status quo: The type of the poll stays nominal but the single votes look like the single votes from a non-nominal poll.
New behaviour with vote weight: the vote weight is then still displayed in the entitled users list and the vote weight is exported in the pdf-export

Possibilities for the vote weight:
A) The vote weight could be hidden and single votes and entitled users list would lookl like the lists from non-nominal votes
B) The vote weight could be displayed and be aligned with the type from the poll (if that is the case then there is another CR:
If a nominal vote is anonymised and then the page is reloaded then there are Errors running through the console e.g.

participant-controller.service.ts:113 ERROR TypeError: Cannot read properties of undefined (reading 'map')

@MSoeb Do you want A) or B) to happen or is there a third option which is preferred

[bastianjoel]

I would prefer a boolean property displayVoteWeight

[bastianjoel]

Instead of extending BaseVoteData (which is also used in other places) add a new type specific for this use case.

Suggested change

	protected createVotesData(): BaseVoteData[] {
	protected createVotesData(): BaseVoteData[] {

[Elblinator]

After a discussion it was decisded that the vote weight should be displayed regardless of "no minal"/"non-nominal"

[Elblinator]

Please also add the vote weight (in exactly the same manner) to the election-polls