feature #5535, add language selection REST service and a javascript plugin
If you want to display this feature in a view, you must add the following lines:
In HTML head node
<view:includePlugin name="lang" />

In HTML body node
<div id="lang-select-div" style="float:right;display:block;">
</div>

Conflicts:
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang.properties
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang_de.properties
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang_en.properties
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang_fr.properties
closing feature #5535
- change message bundle
- change noty options
- change REST path
- change message loading (remove resource bundle cache inside silverpeas-lang plugin)
Conflicts:
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang.properties
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang_de.properties
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang_en.properties
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang_fr.properties
Move the function in charge of the user language setting to a more dedicated web service: MyPreferencesResource. This web service takes in charge the modification of the preferences of the current user. Currently, only the language change is implemented.
Merge branch 'ebo-feature-5535'