added functionality for intermediate state 'ready for approval'

[ruud12]

At the moment a page status is either 'draft' or 'approved'. For general usage it is convenient to have a intermediate stage 'ready for approval', to let other people (reviewers) know that a page is ready to be checked and approved.

The added functionality:

• Added 'ready for approve' link when in newest draft
• Blue color for approve bar when marked 'ready for approval'
• Blue color in approval overview table and text 'ready for approval', to get an overview of the page(s) which have to be checked by the owner(s) (permission auth_delete) and approved
• Marking a page 'ready for approval' can be done by anybody with edit permissions or higher
• Owner (auth_delete) can still approve a page immediately, or mark the page 'ready for approval' if somebody else has to check the page first.

[solewniczak]

I like that but this feature should be turn on/off in the config manager.

[ruud12]

Agree, I hadn't thought of that. I will add the config option functionality.

[ruud12]

I have included the config option to enable "ready for approval" status. Please review the changes and let me know if more has to be changed!