feature #2468: use VERSION in onehost sync

* Only updates hosts with VERSION value < $REMOTES/VERSION
* Adds VERSION to the host when the update is correct
feature #2468: add probe to get remotes version
feature #2468: add --force option to onehost sync

Also prints the hosts selected for upgrade
feature #2468: Use only one queue for onehost sync

Also prints the percentage of hosts updated
feature #2468: add rsync option to onehost sync
feature #2468: fix bug getting probes version
Merge branch 'feature-2468'
Fix error when creating a new template as a regular user
Update languages
feature #2500: option to encode credentials in sunstone
Feature #2505: Possibility to customize the Sunstone display name
Merge branch 'feature-2500'
Bug #678: Startup should create dir for pid file if it does not exists
Fix novnc rendering when the window is detached
Fix typo in migrator upgrade (4.2.0 -> 4.3.80)
Add migrator to 4.4 RC 4.3.90

(cherry picked from commit 972bb1f94a3c2880637f7ef364bf705d168f4137)

Conflicts:
	install.sh
Bump version to 4.3.90

(cherry picked from commit f783d3082b7fb173294da047b0f6dec5cb93aff8)
New man pages for 4.3.90

(cherry picked from commit 38c9990f8987e4ce5678c18a089a27af132a42f7)
Bump to version 4.4.0

(cherry picked from commit d7c6a6a6d215691ad89c66a50c17f07a0c3b43a0)
Update man pages

(cherry picked from commit cd312925d039ba3655e99a0e880cc4c4fe877df5)