also, personalize this:
- enable extensions
- change to my css
- change relative paths.
fix various bugs:
- set the zoom level in notebook_append, not in notebook_init
- have a handly debug option for valgrind
- stuff to deal with plugin code wasn't actually compiling
- created a "stand_in" plugin to provide headers and function
definitions
- when these are not used
- it is likely there are better approaches here
- hidebar, newtab -> hide_bar, new_tab
