Fix saving status on pages and articles in BO
Fixes #138 When the viewport height is small, the save button of the image edition popin is outside the viewport
Fix the wrong path for Less in the manager
Rework the authentication forms
Flatten all the buttons
Fix the hover state for the default buttons
Add a migration to update the product positions
Fix pages localization now it uses the new API style
Merge branch 'new-login-page' of git://github.com/Nesk/mayocat-shop into Nesk-new-login-page
Fix the background color for the language switch button
Merge branch 'new-login-page' of git://github.com/Nesk/mayocat-shop into Nesk-new-login-page
Merge branch 'update-product-positions' of git://github.com/Nesk/mayocat-shop into Nesk-update-product-positions
Fixes #142 Can't delete a page that is localized
Allow the "Remember me" checkbox to be focused with the tabulation key
Set new colors for all the buttons
Remove the fieldset inserted in the contact form
Fix the way the placeholders are handled in the contact form when a theme doesn't support localization
Fix a bug where the locale dropdowns where displayed below the next inputs
Fix the color used for the primary buttons
Fixes #123 : In back-office, store collections expanded/collapsed status in localStorage.

Also added some visual improvements.