Merge pull request #72 from inakiasuncion/archimedes

[archimedes]: version fixing the load conversion
Propagate the locale variable
Change client to force language
Include arabic
Add arabic to WebLabClient.gwt.xml
Add locale to client
[archimedes]: Added (preliminary) weight/time plotting support
[archimedes]: Added downslow button
Merge branch 'master' of https://github.com/weblabdeusto/weblabdeusto into archimedes
[archimedes]: Minor archimedes improvements
Merge branch 'master' of https://github.com/weblabdeusto/weblabdeusto into archimedes
[archimedes]: More minor chart improvements
[archimedes]: NEW client interface
Merge branch 'master' of https://github.com/weblabdeusto/weblabdeusto into archimedes