Merge pull request #1559 from darkwing/search-results-929379

Remove search 'View all' from the first page
Adding 'small desktop' setting to keep left sidebar and push TOC above content
Merge pull request #1557 from darkwing/redesign-columns-too

Adding 'small desktop' setting to keep left sidebar and push TOC above content
bug 926316: Add content extraction tools for new search indexes
bug 926316: Add extractors and new search indexes to wiki document model
bug 926316: Adjustable CHUNK_SIZE for search reindex command

1000 docs at a time choked up my dev VM, whereas 100 seemed easier.