Revert "Do not reset disabled items if there was no previous stagemode"

This reverts commit f6d34af02949ee181bd25162f7603fc35e7896d7.
Revert "SLE-11ed the code"

This reverts commit 2a1541cc48b830dc9b0fa77e428d7e290b835fba.
Revert "Re-enabling all disabled items (steps, proposals) if stagemode has changed"

This reverts commit 17186919b4d977c125212a636863b66d93c99cab.
Added changes file entry - resetting steps