Squashed 'framework/redux-framework/' changes from f76e6c1..8fd3ac4

8fd3ac4 #1632 and sortable css update Signed-off-by:KProvance <kevin.provance@gmail.com>
d56ec78 * Modified:   CSS for menu items when active (no hover). * Added:      Visual feedback to left menu if active.
ae0c8ef Callback for fields and validation can now be class-level. Thanks @echo1consulting. Google Fonts no longer require a Google API key unless you want to dynamically update the store. Added new system-wide argument to force google_update_weekly the font cache. Also changed the order of file_system includes to remove an undefined index for submit_button(). Also fixed #1599 by updating Parsedown library. Also fix for issue #1628, spacing and dimensions now only output 0 if 0 is entered (Thanks @Webcreations907).
81793ce Merge origin/master
531b507 #1623, #1622 Signed-off-by:KProvance <kevin.provance@gmail.com>

git-subtree-dir: framework/redux-framework
git-subtree-split: 8fd3ac445c537479eab3d85e4caa6794c76365f1
Redux Framework v3.3.7.1
Merge commit '5b1ead3e247ad85dff96688f41efb908d291497f'