Compatibility with Odoo v9

[ryanc-me]

Hello! This is my first pull-request, so please forgive any mistakes or oversights on my part.

The proposed changes make the module compatible with Odoo v9, and refactor some of the carousel code. I intend on adding support for an image-magnifier plugin, per variant images/filters, and more config options.

Changes include:

• Updated form/view templates (the xpath '@string' syntax is no longer supported, so we've switched to '@name')
• Added dedicated files for CSS and JS (see static/src/js/ and static/src/css/)
• Updated asset definitions to include new CSS/JS files
• Refactored HTML/XML templates slightly

This module should be backwards-compatible with v9, so it might be worth doing some testing, then merging into master.

Hopefully these changes are up-to-standard. Please contact me if there are any issues, my email address is mginshe@gmail.com

Kind regards, Ryan

[lukebranch]

@MGinshe ,

Thanks for the PR! I am not maintaining this module much these days due to time constraints, however in that the functionality is still not present in the core in 9.0 i'd suggest that I create a 9.0 branch and you target your PR to that branch.

9.0 branch i'll create in a few minutes. Please send a new PR when you get the chance and i'll review it. Thanks!