Use text rather that icons

Currently, the actions are frequently represented by icons, see the workspace management
http://www.institut-telecom.xwiki.com/xwiki/bin/view/XWiki/XWikiPreferences?section=Spaces

The problem with those icons is that they aren't immediately recognizable. IMO, it would be much clearer, if the text tokens such as "view", "edit", "archive" were used instead.