RC8 updates.
Added uuid module.
Merge branch 'case-4248' into development
Add ding_staff patch that corrects rules exports.
case 4349 - Ding campaign rules cache patch.
Merge branch 'case-4349' into development
case 4384 - Empty campaign content patch.
Merge branch 'case-4384' into development
Merging rc8 to development branch.
Case 4334 - sorting for ting_search_carousel.
case 4249 - Legend module.
Merge branch 'case-4249' into development
Merge branch 'case-4334' into development
case 4342 - History back module added.
Merge branch 'case-4342' into development
Merge branch 'development' of github.com:easyddb/ding2 into development
case 4312 - Ajax bug patches.
Merge branch 'case-4312' into development
Case 3994 - Ting extended search module.
Merge branch 'case-3994' into development