in master, this was updating every 10 hours,
regardless of the value, due to a variety of bugs,
including using relativeTimeThreshold getters
that do not exist in moment.js 2.7.
modify toolbar.js to be able to deal with actions.
modify maintoolbar to deal with the new action architecture
add a way to triger notification widget hiding
As per discussion, each kernel can provide a file name kernel.js that
we try to load at kernel switching. If such a file exist we assume that
the kernel pathches the javasscript and that this javascript cannot be
unpatched, and further switching of the kernel cannot be undone without
reloading the page. (separate PR for UI)
if a kernel provide kernel.js, the it should consist into a AMD module
definition that uses require.js the module shoudl define a function name
`onload` that will be called at the appropriate moment before the kernel
starts.
This is a combination of 10 commits.
Enable widget instanciation from front-end.
Address @minrk 's review comments.
Make API that allows users to persist widget state easily.
Added support for view persistence
Started adding support for model persistence.
Half way there!
Finished persistence API.
Move persistence code into the widget framework.
Fin.
Bug fixes
mainly in navbars, where we were doing custom
things that bootstrap already did with classes.
This did require the removal of multiple class LESS inheritance for
navbar buttons, because it doesn't work properly. Seems like a LESS bug, but I'm not sure.