Make non-ASCII docstring unicode
Merge pull request #4668 from takluyver/unicodestdstream-docstring

Make non-ASCII docstring unicode
add missing help strings to HistoryManager configurables

The result was missing information in generated config files.
Fix docstrings in utils.text
Remove unused 'attic' module
Merge pull request #4669 from minrk/history-help

add missing help strings to HistoryManager configurables
Merge pull request #4671 from takluyver/utils-text-docstrings

Fix docstrings in utils.text
common IPython prefix for ModIndex
Merge pull request #4672 from takluyver/burn-the-attic

Remove unused 'attic' module
Merge pull request #4675 from Carreau/modindex

DOC: common IPython prefix for ModIndex