Keywords should shadow magic functions
Disable autocall for prefilter test
catch unicode error listing profiles

there can be garbage files on the filesystem, and we shouldn't be bothered by them.
Fix scrolling output not working
by adding a conditional for the append output
height reset.
Explicitly state what version of Pandoc is supported in the docs.
limit random ports to positive values
catch EACCES when binding notebook app

can come up for low ports on *ix, or user access control restrictions on Windows.

closes #4308
underscore missing on notebook_p4

Related with issue https://github.com/ipython/ipython/issues/4312
fix initial sys.path

recent change caused initial sys.path to lose '' as the first element in the notebook.

closes #4317
Merge pull request #4316 from pvilas/master

underscore missing on notebook_p4
test first element of sys.path in Kernel

both when `--profile-dir` is specified, and when it is not.
Scroll to top after slide change event.
Fixed overflow not responding.
Deleted commented addthis toolbar.
Deleted loading of addthis-specific js file and other references.
Use the with statement to open a file.
Remove unused loop variable.
Avoid using a temporary variable by returning the value directly.
Merge pull request #4315 from jdfreder/docs_pandoc_version

Explicitly state what version of Pandoc is supported in docs/install
Merge pull request #4318 from minrk/sys.path

fix initial sys.path