WIKI-540: [XSS] Wiki - Search Result displayed

Fix description:  Sanitize except content before displaying search result
WIKI-547 Attached file no longer exists after previewing a new page

Fix description: Only remove draft page when start adding new page

Fix description:
- Problem: Remove draft after doing any action.
- How to fix ? : Remove draft only in case the action add new page was called
WIKI-586: [XSS] Preview Wiki template

Fix description: Escape html for the title of page before display page preview
WIKI-515 [Wiki] Bugs when moving to a location in page by clicking to bookmark (anchor with #)
Problem analysis:
- When clicking onto an anchor of TOC, scrolling down of right container and the page make platform's top navigation and left navigation to disappear (partially)
- After clicking onto last anchor of TOC of long page, a blank area appears
Solution:
- Using only scroll of right container to goto destination of TOC anchor link
WIKI-647 rendering on some box macro

Problem analysis:
- Macros tip, warning, info actually generate span element.
- In PLF 3.5 these items are not broken because span is set to "display: block"
Solution:
- Set "display: block" for span tag generated by macros tip, warning, info
WIKI-580: CLONE - Position of the message Draft saved at in French
WIKI-575 Incorrect UI of Search Completion
Merge commit 'b6a6e98171af786648b1d10aab1a19c751c816b9' into HEAD