BUG: make upload-new makefile target usable by others

Also, fix permissions for the upload.
BUG: fix canopy text in install.rst
Update to new IPython logo
Merge pull request #16 from Carreau/new-ipython-logo

Update to new IPython logo
BUG: replace www.scipy.org -> wiki.scipy.org where appropriate
Makefile: remove github upload target
htaccess: redirect Topical_Software to correct place + add redirect for MlabWrap
ENH: describe also where to report bugs for other projects in scipy stack.
ENH: add links to documentation of all core Scipy Stack projects.
MAINT: move docs page out from scipylib/ and add note on tutorials.
MAINT: split bug-report page in SciPy stack and lib parts.
MAINT: move guidelines on reporting bugs to scipy stack bug report page.
MAINT: fix instructions in README.txt