Revert "Issue #1222324 by damz, agentrickard, bojanz, dereine: Find a proper way to have multiple access tags per view and support relationships."

This reverts commit 5c1de214.

This reverts commit 72c70f6d.

Issue #1222324 by damz, agentrickard, bojanz, dereine: Find a proper way to have multiple access tags per view and support relationships.

As dbtng doens't have base tables per tag this patch adds an ugly
workaround, that runs the query altering manually foreach tag.

#1176048 by filijonka, tim.plunkett, dereine: Let the remove button respect chaning of the override selector, yeah!

#1331032 by dereine: Hide rewriting if the value of a field is actually empty by default. That's maybe causes some views but sure we are doomed anyway. Additional fix it let the custom block actually always display something

#1257376 by dereine: Don't run the preview on page load, but adding a seperate request for it.\n\nThis will catch a lot of possible issues with sql errors and can improve the speed of the editing, if you have unchecked the automatic-preview checkbox

This reverts commit f38c3fe3.

Revert "#1199328 by casey, bojanz: Add typehintings to every place which doesn't break the api. KUDOS"

This reverts commit 553f0e80.

#1301790 by rfay, dereine: Use created instead of timestamp for user.created field, and add some move definition