[FIX] Ambiguous import

WARNING ? openerp.modules.module:
Ambiguous import: the OpenERP module `web` is shadowed by another
module (available at /home/elbati/workspace/openerp/progetti/siem/git/siem/parts/odoo/addons/web).
To import it, use `import openerp.addons.<module>.`.
Merge pull request #22 from eLBati/7.0_fix_ambiguous_import

[FIX] web_export_view: Ambiguous import