This reverts commit b886a25c.

The changes introduced by b886a25c certainly make things easier for the case when
we're importing the tarballs into our git-annex, but it makes this piece of doc
unusable for other usecases, most notably:

 * quickly testing a new stable or alpha Tor Browser _before_ uploading hundreds
   of MiB
 * for contributors who don't have write access to our git-annex thingie, but
   still want to work on things that involve including a custom, experimental,
   not-released-yet or whatnot Tor Browser in the ISO.

Conflicts:
	wiki/src/support/known_issues.mdwn

Will-fix: #8029

We have no hard data about how long it takes.

Fix-committed: #9099

Fix-committed: #9010

Conflicts:
	wiki/src/contribute/release_process/test/setup.mdwn

Will-Fix: #9099

Will-fix: #9099

new Debian package upload.

Fix-commited: #9121 Thanks!