Feature #3447 : File Upload Plugin
- adding jQuery file upload plugin
- adding view generator tag that handles the use of the jQuery file upload plugin
- adding manager to retrieve uploaded files on server side
Merge branch 'master' into feature-3447

Conflicts:
	war-core/src/main/webapp/util/styleSheets/globalSP_SilverpeasV5.css
	web-core/pom.xml
Feature #3447 : File Upload Plugin
- modifying behavior to allow the user to enter the title and description for a file during transfer to the server
- adding attachment creation feature to UploadedFile.java
Merge branch 'master' into feature-3447

Conflicts:
	war-core/src/main/webapp/util/styleSheets/globalSP_SilverpeasV5.css
Feature #3447 : File Upload Plugin
- fixing a little problem in global CSS
- renaming some methods
Merge branch 'master' into feature-3447
Feature #3447 : File Upload Plugin
- fixing a little problem of character encoding
Merge branch 'feature-3447' of https://github.com/SilverYoCha/Silverpeas-Core into ych-feature3447

Conflicts:
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang.properties
	config-core/src/main/config/properties/org/silverpeas/multilang/generalMultilang_fr.properties
	war-core/src/main/webapp/util/styleSheets/silverpeas_light_style.css
integrating feature #3447
removing definitively estimation of download time on attachment