Squashed 'framework/redux-framework/' changes from 79f7d54..f76e6c1

f76e6c1 Added update_notice argument to sample-config as per issue #1607
f312bfb 3.3.6.8 release

git-subtree-dir: framework/redux-framework
git-subtree-split: f76e6c1b118709121dffeeac85d4787e2b58cf73
Redux Framework v3.3.6.8
Merge commit 'c0e2204a1e7d64c4bc4b0470c304c990a0535840'