Display notice on All Views/New View pages when GF is not activated

[mrcasual]

Ref: #1979

GV notices are reused but made non-dismissible on those two pages.

[zackkatz]

@mrcasual Please confirm the use statements in class-gv-view.php. I changed those during merge commit.

use GravityKit\GravityView\Foundation\Helpers\Arr;
use GF_Query;
use GravityView_Compatibility;
use GravityView_Cache;