fix bug 880049 - Update mdn sample content
Merge pull request #2330 from darkwing/live-sample-headings-880049

fix bug 880049 - Update mdn sample content
Fixed missing slug field in serialized group data.
Merge branch 'master' into search-filter-api-again
More refactoring

- tries to use the search filter inputs instead of building the search url manually (security people!!)
- fixes an error with empty parameters
- renames "topic" to "filters" since that's what they are
Merge pull request #3 from jezdez/search-filter-api-again

Fix slug error