idea list new look, 1st draft
no top/bottom borders
More obvious and maintainable display of read-unread messages
Initial move of the query logic out of the messageList view class.
Restore unread count, and previous filtering functionnality
Add missing file
continuous lines to triangles
Make all filters independent in post api.  Restore drilling down into a thread by clicking on message title.
remove cruft
Filter logic complete.  Filters can now be added/removed individually from messagelist.
Fixing the min-width for #ideaPanel
cleaning a comment
Basic query engine plumbing for mesage sorting
Implement orphan filter properly, remove serializable() for ideas, return the number of orphan and synthesis messages in the root idea
Adding two icons
#863 Creating the rootIdea view
New message list
Creating the rootIdea in ideaList
put arrow inside message
Adding the orphanIdeaView in ideaList