Or remove it where not needed

Also remove some unused html responses

Fixes #7521

Fix Person.in_aspects scope to return each person only once when the
person is in multiple aspects.

spec/spec is a new folder for "tests for tests"

This commit introduces changes to the user data export archive format.
This extends data set which is included in the archive. This data can be
then imported to other pods when this feature is implemented.

Also the commit adds the archive format json schema. ATM it is used in
automatic tests only, but in future it will also be used to validate
incoming archives.

Fixes #7245

Javascript refactorings for better maintainability:
* simplePreview function to avoid code duplication
* Preloaded conversation is processed in a slightly different way
* Split isPreviewOrTexareaNotEmpty function since it has more than one responsibility

This class is capable of quering a list of people from authors of given posts that are non-contacts of a given
user.

We need to reinit autosize when we navigate in conversations with the backbone router.

This class implements methods that allow to query relayables (comments, likes, participations,
poll_participations) of other people for posts of the given person.

This class allows to query posts where a person made any activity (submitted comments,
likes, participations or poll participations).

This commit refactors account deletion spec by moving data creation to a helper
object DataGenerator.

Add pod name to FROM: header for no sender case

This improves the main stream when you have less or inactive contacts
and ignored an active person that posts many posts with tags. When the
person is only removed after collecting all post ids, you don't see
posts with tags from other people.

this will help big profiles, and the informations are public anyway, so no
need to encrypt them.

fixes #3164