XWIKI-13748: Save embedded images that use Data URI as attachments when importing an office document
* use code compatible with Java 7

(cherry picked from commit 443e3964)

XWIKI-13748: Save embedded images that use Data URI as attachments when importing an office document

(cherry picked from commit 7cdbd8fb)

* Deprecate the TempResourceAction
* Move the code related to temporaty resources in a separate module (xwiki-platform-resource-temporary)
* Extract most of the code from WebJarsResourceReferenceHandler into AbstractServletResourceReferenceHandler so that it can be used also for serving temporary resources.
* Update the SVG rasterizer to use the temporary resource API.

(cherry picked from commit a211c90d)
(cherry picked from commit 4618cf3d)

XWIKI-13756: Repository extension update might end up deleteding and recreating the same dependencies over and over

(cherry picked from commit edea340d)

Revert "XWIKI-10136: A user should be able to edit her comments even if she does not have the edit right on the page."

This reverts commit ef051e73.

Revert "XWIKI-10136: A user should be able to edit her comments even if she does not have the edit right on the page."

This reverts commit f6c1de6e.

Revert "XWIKI-10136: A user should be able to edit her comments even if she does not have the edit right on the page."

This reverts commit 87c3879b.

- Switch to the DisposableCacheValue interface
- Prevent cache insertion to bite its own tail (the added entry) during any consequent eviction

(Cherry-picked from master commit eb423423)

XWIKI-10136: A user should be able to edit her comments even if she does not have the edit right on the page.

(cherry picked from commit d1123779)

XWIKI-10136: A user should be able to edit her comments even if she does not have the edit right on the page.

(cherry picked from commit c4595719)

XWIKI-10136: A user should be able to edit her comments even if she does not have the edit right on the page.

* Quick fix.

(cherry picked from commit eb04070b)

* this commit is to fix the same issue for XWiki 8.3
* this could be applied also for XWiki 7.4.5 only if the fix for http://jira.xwiki.org/browse/XWIKI-13274 will be also applied

(cherry picked from commit 692f0c52)

* Fixed the NPE

(cherry picked from commit d999d1fd)

(cherry picked from commit a594edb1)

Fixed conflict caused by formatting changes.

* Fix usage of deprecated EditModeClass object.

(cherry picked from commit c1ce2951)

* Render the section title using the plain syntax. We can't change the DocumentSection class to hold the plain title instead of the raw wiki syntax because it is exposed in the public API.

(cherry picked from commit a91776de)

(cherry-picked from master commits 5969642e, 629ce4c9 and 53dbabc7)

XWIKI-13087: The setup of user initial groups on user creation can set groups cache to a wrong value, resulting in wrong user groups until next restart

(cherry picked from commit 5710a756)

(cherry picked from commit 337fbc20)

(cherry picked from commit 621bf103)

XWIKI-13715: XWiki#getPlainUserName() should log only a warning instead of an error with full stack trace because it falls-back on the user profile reference name
* Improve warning message.

(cherry picked from commit e7f1ac1e)

* Lower a bit the test coverage ratio on the stable-7.4.x branch (it's still higher than it was before XWIKI-13700).

(cherry picked from commit 9ee96187)

XWIKI-13715: XWiki#getPlainUserName() should log only a warning instead of an error with full stack trace because it falls-back on the user profile reference name

(cherry picked from commit 48bd7e92)

XWIKI-13710: The title displayed for the current document in the navigation panel is "Document Tree"
* Actually the display script service doesn't help. Using the default displayer hint is not good because the documents that have a sheet associated (the BlogIntroduction) are badly displayed. We need to use the sheet displayer but we need to make sure the displayed document instance is different than the current document (and we can achieve this through clonning).

(cherry picked from commit b25b73b1)

(cherry picked from commit d1d90a63)

(cherry picked from commit 79b91bcf)

XWIKI-13712: Document#saveDocument set the document author as guest reference instead of null when context has no user

(cherry picked from commit 3ccbe39a)

XWIKI-13712: Document#saveDocument set the document author as guest reference instead of null when context has no user

(cherry picked from commit 272f302e)

* Last fix for PostgreSQL (column "title" does not exist)

(cherry picked from commit 8339901f)