Move invariant theory to seperate subfolder

[jnoordsij]

Create a new folder invariants in rings as a general location for invariants of different types of curves and forms.

This also allows reconstruction of curves or binary forms to be put here. For binary quintics, this is part of ticket #25508. Binary forms of degree 8 are part of ticket #22173 and could also be moved here (see also comment 34 on that ticket).

CC: @mstreng

Component: algebra

Author: Jesper Noordsij

Branch/Commit: de18ba8

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/26370

[jnoordsij]

Description changed:

--- 
+++ 
@@ -1,3 +1,3 @@
 Create a new folder invariants in rings as a general location for invariants of different types of curves and forms.
 
-This also allows reconstruction of curves or binary forms to be put here. For binary quintics, this is part of ticket #25508. Binary forms of degree 8 are part of ticket #22173 and could also be moved here (see also comment 34 on this ticket).
+This also allows reconstruction of curves or binary forms to be put here. For binary quintics, this is part of ticket #25508. Binary forms of degree 8 are part of ticket #22173 and could also be moved here (see also comment 34 on that ticket).

[jnoordsij]

Branch: u/jnoordsij/invariant_theory_moved

[sagetrac-git]

Commit: bc94a93

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

bc94a93

Added deprecation warning.

[jnoordsij]

Author: Jesper Noordsij

[sagetrac-git]

Changed commit from bc94a93 to de18ba8

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

de18ba8

Fixed misplaced import.

[tscrim]

comment:6

Green patchbot; LGTM.

[tscrim]

Reviewer: Travis Scrimshaw