Show ticker on my home and add profile targeting

[Jeremy Hopkins]

1. add option to show ticker on myhome page
2. add second ticker with profile field targeting on both

Thus we can show ticker on my home and split news between staff and student

[Jeremy Hopkins]

Commit e12d567 adds second field and access rules. Will add a third text field / lock so that we can have:

• messages all users
• messages students
• messages staff

If there are no messages then we need a default value of "No recent updates..." which we should put into the language pack. The reason for this is because if there is no content to display the jQuery ticker presents an "undefined" message.

If we try and hide the ticker entirely if there are no messages found it adds complexity in terms of the layout, whether breadcrumbs are hidden on my home.

If there are no messages then the admin has the option to hide the ticker entirely, the default value is where admin has left it visible but because of access rules a given user may not see anything.

[Jeremy Hopkins]

Commit linked in this ticket and another to allow ticker to show on myhome resolved this issue.