Improve result page for search results

The search results page could present more information and in a different way, maybe in a way more similar to a google search results page or other entreprise search engines:

1. By adding more contextual information:

• path to the workspace where the document lives
• author

2. By putting the summary below the other information (instead of on the right).

3. By augmenting the default number of search results (currently only 10 / page).