pentaho_reports. Changes to model usage so report works on extended breadcrumb trail.

Backport mod committed to version70 branch as commit 6a20c430f53020fdac9da405c72019cd516022fc.
Merge pull request #135 from doug-willowit/dev61_1

pentaho_reports. Changes to model usage so report works on extended brea...
Ensure correct active model/ids passed in context of report action.
Merge pull request #156 from doug-willowit/dev61_1

Ensure correct active model/ids passed in context of report action.
Add Support for XLSX Spreadsheets.

Untested.

Fixes #158.
Merge branch 'version61' of github.com:WillowIT/Pentaho-reports-for-OpenERP into version61