Add find(threaded) docs.

Refs #1180
Add count() docs.

People will be looking for a replacement for find(count), put it where
they might be looking.
Link two count() methods together.
Update development installation to use PHP server
Update port numbers
Show that idField and parentField are expanded default values.
Merge pull request #1296 from cakephp/issue-1180

Document find(threaded)
Merge pull request #1297 from bcrowe/3.0-dev-install

3.0 - Update development installation to use PHP server
Consistent usage of cake console across docs
Merge pull request #1300 from bcrowe/3.0-console-refs

Consistent usage of cake console across docs
Correct directory for cake console
[fr] Follow #1275

3.0 typehinting
[fr] Follow #1273

Updates for SQLServer.
[fr] Start to reorganize cache
Update a few view changes and remove 2.x change notices.
Add TOC for cell docs.
Start expanding cell docs.
Finish first pass at cell docs.
Remove docs for deprecated features.
Fix TOC issues and add missing documents.