Restored ipython profile locate dir and fixed typo. (Fixes #3708).
Changed ipython profile locate foo -> ipython locate profile foo in docs
split adds new cell above, rather than below

preserves the order of code and output across split event

rather than moving output into the middle of the split.
split focuses the top of the newly created cell
Merge pull request #8 from ivanov/split-below

split focuses the top of the newly created cell
manual rebase base/handlers.py
manual rebase notebook/handlers.py
manual rebase notebookapp.py
manual rebase services/kernels/
manual rebase notebooks web services
manual rebase - add sessions web service
manual rebase static/notebook/js files
manual rebase static/services (add session.js)
manual rebase static/tree/
manual rebase html notebook templates
manual rebase tree/handlers.py
fixing some bugs after rebase
fixing path redirects, cleaning path logic
delete debug comment
fix restart/interrupt kernel buttons