Fix T76251: Animated procedural texture does not influence particle system

Dependancy missing while building depsgraph for particle systems.
fix: adding a relation texture->particles when texture has animation data.

Reviewed By: sergey

Maniphest Tasks: T76251

Differential Revision: https://developer.blender.org/D7573

Fix T75845: some dependencies update missing when painting textures.

issue: Painting a texture that is set as a particle system influencer, doesn't
update particles. An external trigger (such as changing influence slider)
is required to update particles.

fix: The root cause is a missing relationship from image to texture in the
dependency graph.

test: Once fixed, image texture painting updates expected dependencies
such as particle system influence or displacement modifier.

Reviewed By: sergey

Maniphest Tasks: T75845

Differential Revision: https://developer.blender.org/D7472

Multi-Object-Editing: MESH_OT_faces_select_linked_flat

Reviewers: dfelinto

Maniphest Tasks: T54643

Differential Revision: https://developer.blender.org/D3372

T54643-Multi-Object EditMesh: MESH_OT_select_nth

With changes by Dalai Felinto:
* Move WM_operator.* outside for loop.
* Update error message to handle Mesh and Meshes.
* Skip main functionality when no vert/edge/face is selected.

Maniphest Tasks: T54643
Differential Revision: https://developer.blender.org/D3371