Today, Odoo is really tricky to use without seeing the screen, it must be improved to be usable.

This PR forbid to use labels without a "for" attribute, add some title, rule and aria attributes in HTML. With that, Odoo will be fully usable with a screen reader.


* [IMP] Labels must have a for attribute. Improve accessibility.
* [IMP] Better error message when trying to read a missing cached value
* [FIX] Add some aria-label and title attributes for screen readers.
* [FIX] Template name is not included in the error message in case of SyntaxError in QWeb
* [FIX] Improve the Tour failed at step error message to be more explicit.
* [IMP] Add aria-labels
* [FIX] Add missing aria-label on failing test
* [IMP] aria-hidden means hidden. Fix all bad aria-hidden and hide aria-hidden for all.
* [IMP] Color names on kanban views and many2many tags
* [IMP] Add some checks on views for accessibility.
* [IMP] Add `alt` attribute on `img` tags.
* [IMP] Add aria-label and title on non-described icons
* [IMP] Add button role to widgets with btn class
* [IMP] Translate aria and formatted attributes.
* [IMP] Remove wrong aria-labelledby
* [IMP] Add menu role on dropdowns
* [IMP] Buttons must be focusable
* [IMP] Add aria attributes on progress bars
* [IMP] Improve accessibility of basic widgets
* [IMP] Change main layout to more semantic tags
* [IMP] Add menuitem role when missing
* [IMP] Remove wrong role='presentation'
* [IMP] Improve accessibility of tab panels
* [IMP] Add aria-invalid on invalid fields
* [IMP] Add aria-sort on ordered columns
* [IMP] Add role on alerts
* [IMP] Use dialog role, header, main and footer tags for modals
* [IMP] Add labels on o_status
* [IMP] Improve accessibility of kanban view with feeds and articles
* [IMP] Add alerts in case of new messages
* [IMP] Add widget, navigation or img role to aria-labelled items

Before this commit, website.page xml record were created in 2 steps:
	1. Create an ir.ui.view record with <template> tag
	2. Create a website.page record with <record model="website.page">
But this is useless since website.page inheritS ir.ui.view, you can create both
records just in one <record> tag.

Note: This is NOT TRUE in every case:
Odoo's ORM will suffix external_id of inherited records (in this case the
ir.ui.view created through the website.page record) with its model's name.
This can be a problem in some case (this is an example):
	website_crm_template.xml create an ir.ui.view inheriting the
	ir.ui.view 'website.contactus'.
	But if we didn't keep website.page & ir.ui.view records split for that
	specific case, the ir.ui.view would inherit a website.page record
	causing an error. (website.contactus would be the id of the page record
	while the ir.ui.view's id would be website.contactus_ir_ui_view)

In short: when migrating an ir.ui.view (<record> xml) to a website.page:
	* If there is record inheriting the ir.ui.view ID, then split
	  website.page & ir.ui.view
	* if not, you can create the website.page and its ir.ui.view both in one
	  record (<record model="website.page").

This commit also removed remaining page="True" from xml template since we
removed the 'page' attribute from ir.ui.view model overrided in website module.

- RML Reports
- Webkit Reports (most part already removed by 13b9982c6298021289707ed364e3c1d622a09f13)
- LocalService in netsvc.py
- rename attributes like rml_% to report_%
- rename ir.actions.report.xml to ir.actions.report
- allow rendering directly on an ir.actions.report by calling render method
- remove 'controller' report_type
- remove unused res.font stuff
- remove print_report method in models.py (not used)
- restore removed call to pdftotext process in test_reports

NB : Some tests have been modified.
One assert statement in orderpoint_calendar.yml has been modified,
but the change is legit has no python method has been modified at all

bzr revid: fme@openerp.com-20140505145816-jz7e4byh1imrkaek

bzr revid: fme@openerp.com-20140327105023-x3r7mjmptjxpzkqc

Test suite is still todo

bzr revid: fme@openerp.com-20140326151411-moo1yuozvpgro1mh