Move translations keys for the User Directory Application

### Users Directory
xe.userdirectory.title=User Directory
xe.userdirectory.customizeColumnsTitle=Customize the columns to display
xe.userdirectory.customizeAvailableColumnsLabel=Available columns
xe.userdirectory.customizeAvailableColumnsHint=Columns that can be displayed in the user directory for each user.
xe.userdirectory.customizeAddColumnButtonLabel=Add
xe.userdirectory.customizeSelectedColumnsLabel=Selected columns
xe.userdirectory.customizeSelectedColumnsHint=Space or newline separated list of columns, corresponding to properties of the [[XWiki.XWikiUsers]] class, to be displayed in the user directory. Duplicate columns are ignored.
xe.userdirectory.customizeSaveButtonLabel=Save
xe.userdirectory.customizeResetButtonLabel=Reset to default
xe.userdirectory.customizePreviewTitle=Preview
xe.userdirectory.isCustomizedWarning=You are viewing a customized user directory. You can [[reset it to default>>{0}||queryString="{1}"]] or [[customize>>{2}||queryString="{3}"]] it further.
xe.userdirectory.canCustomizeInfo=The user directory can be [[customized>>{0}||queryString="{1}"]] to display the columns you wish to see.
xe.userdirectory.canCustomizeInfoGuest=The user directory can be customized to display the columns you wish to see, but you need to [[log in>>{0}]] first.
xe.userdirectory._avatar=Picture
xe.userdirectory.doc.fullName=User ID
xe.userdirectory.emptyvalue=