Previously GroupInviteForm included several collections of components
which were supposed to use as a single object. Now they are replaced
with a class and all functionality related to this collections moved
there too. Also fix#3621
Revert needed, since otherwise there is no way to do automatic sorting
of includes.
Also reverted change to the docs, as leaving it would make incorrect
docs.
In case of conflicts, includes were sorted according to the coding
standards from #3839.
This reverts commit b4a9f04f92.
This reverts commit 5921122960.
That pull request made qTox crash in a number of ways, with no quick fix
available.
Hopefully there will be a way to fix crash, so that this commit could be
reverted, and fix applied.