mods to install mathjax from an explicitly downloaded tar or zip file
a few fixes

- default back tom Mathjax2.0
- install to profile by default
- fix in doc
- fix bad return
update 1.1 to 2.0
make destination configurable
Fixed infinite loop on exit in the event of where multiple debuggers have been attached an there is an uncaught exception. I am in the process of submitting a similar patch for ipdb.
Maintain backwards compatibility in BdbQuit_excepthook.excepthook_ori.
use argparse to make most of the parameters configurable
remove unexisting headings level
Merge pull request #2716 from Carreau/too-many-headings

remove unexisting headings level
diverse fixes for project url

 * Force leading and trailing slashes in base_project/kernel_url
 * Add support for the prefix in template for static files
 * Fix some forgotten quotes
 * remove old make_static_url which is now a jinja2 macro

fixes-2720
fix testing all subpath where to install mathjax
Merge pull request #2446 from Carreau/offline_mathjax

Refactor mathjax install

alternativ to PR 2267.

Install mathjax in .profile/static with a few option to install from already downloaded tarballs or select other install path.
Add qthelp docs creation.
try to fix rtfd
Merge pull request #2729 from Carreau/rtfd

Fix Read the doc build, Again
added blockquote CSS
Merge pull request #2730 from mrshu/markdown_blockquote

added blockquote CSS
Merge pull request #2726 from Snegovikufa/master

Add qthelp docs creation
Merge pull request #2544 from bfroehle/tracer_recursion

Infinite loop when multiple debuggers have been attached.
Fix issue #2550