XCOMMONS-391: Automatically validate any extension provided to DefaultInstalledExtensionRepository#install
(cherry picked from commit bb3517d0)

(cherry picked from commit 6c0aed45)

(cherry picked from commit 17ff9586)

Conflicts:
	xwiki-commons-core/xwiki-commons-extension/xwiki-commons-extension-api/src/test/java/org/xwiki/extension/version/internal/DefaultVersionRangeTest.java

XCOMMONS-390: The progress bar jumps at 100% and stays there while computing the upgrade plan for installed extensions
(cherry picked from commit b1d1b3ec)

XCOMMONS-383: First level of upgrade plan tree contains all extensions and not only the non-dependencies extensions on a subwiki
(cherry picked from commit 68fc6eea)

Conflicts:
	xwiki-commons-core/xwiki-commons-extension/xwiki-commons-extension-api/src/test/java/org/xwiki/extension/repository/installed/DefaultInstalledExtensionTest.java
	xwiki-commons-core/xwiki-commons-extension/xwiki-commons-extension-api/src/test/java/org/xwiki/extension/repository/local/DefaultExtensionSerializerTest.java

(cherry picked from commit cb3d9f5a)

* fix log
(cherry picked from commit 3e96f634)

* fix typo
* fix bug
(cherry picked from commit 6dfe8dbb)

(cherry picked from commit a87a0acc)

(cherry picked from commit 610c432b)

* Removed unneeded dependency on RESTlet

(cherry picked from commit fcc8c8c0)

* better error reporting

* fix build

* safer test