* Add T field to template variables
* Remove languages.SetTranslationFromRequest
* Add Tfunc on handlers
* Remove T and Ts from template_functions
* Update templates
Change the templates to use the local Tfunc, instead of the global one.
Also changed the signature of the fields on template_variables.go, so that
they return a template.HTML to avoid escaping problems.
* Remove unnecessary variable
Since the captcha uses the default tab order it was getting skipped
by the registration form.
- Add autofocus to the registration and upload view
- Add id attribute to input elements that have a label
