erp5_officejs_support_request_ui_test: Delete half of tests to see if it still hang on. And only run Support Request tests.

author: Sven Franck

to be consistent with *_action role requirements.

The test that was checking for web_view action output of a
portal_type in a web site had too much hardcoded values,
making the test inconsistent in some way.

erp5_post: Sort the post list when fetching the content from database. And only get the post which state is "published".

The comment user field in the listbox which list Support Requests should show
the latest person who left comment.

Allowed change cache to update application.