XWIKI-9153: hibernate.cfg.xml is not properly generated for pgsql
XWIKI-9145: The Color theme header image is not exported properly in the HTML export
XWIKI-8444: Add faceted search to the Solr Search UI
* Integrate Caty's improvements. Thanks Caty!
* Remove the 'experimental' message.
* Show the search facets.
* Clean up and refactoring of the Velocity code.
XWIKI-9149: Add CSRF token verification to the Solr administration section
* Put back the 'cols' attribute because it is required.
[Misc] Fix comments to remove useless "if not in virtual mode"
XWIKI-9004: Impossible to use PostgreSQL without defining the xwiki.virtual_mode hibernate property
XWIKI-9159: XWikiContext#getWikiServer() is deprecated without any replacement and does not work on subwikis anymore
XWIKI-9159: XWikiContext#getWikiServer() is deprecated without any replacement and does not work on subwikis anymore
* fix log
XWIKI-9004: PostgreSQL wrongly tries to switch to the schema with database name when in database mode
Revert "XWIKI-8948: Each property type should be stored in its own database table" until XWIKI-9041 is solved.

This reverts commit b5a5747562d3b643e4e473f880b0bfaea45e54a0.
XWIKI-8971: Several documents have no parent set after importing the UI from the XAR
XWIKI-8937: Cannot update VisitStats because the computed uniqueID>255
XEM-210: Send page by email fails to do a global search for users in global wiki
* Display the scope toggle when not on the main wiki.
XWIKI-8755: A "Name" user/group is automatically added on IE9 when selecting "User" or "Group" from the Send Message drop-down list
* Use the placeholder attribute instead of the withTip CSS class for better support on modern browsers.
* Focus the text input before creating the user picker so that the placeholder value is cleared.
Improve pom.xml
XWIKI-8360: Code Macro is not multithreaded causing performance issues
XWIKI-9162: Unsupported language should have the same behavior than none and not generate a verbatim block
Ignore PyDev configuration file
[misc] Remove custom 'withTip' implementation.
XWIKI-8777: Users are allowed to create pages without entering a "Page Name" on IE8/9
* Improve the 'withTip' behavior for browsers that don't support the placeholder attribute:
** Mark the input it's empty
** Allow the user to type exactly the default value (which should be valid)
* Use a custom validation on page creation for the page name input, takeing into account the default value.
XWIKI-8444: Add faceted search to the Solr Search UI
* More cleanup.
* Refactor the search sort and filter.