reorder list of additional tuts, add nav tip
merge from master
refine formatting and rework text of first two sections
Merge pull request #653 from twosigma/spot/tuts2

rework intro
trivial change to try to force matching "v1.0" branch for version instead of master
Remove cell border when locked

fixes #557
run gulp on windows too
update icons with final bkg color, update version in app plist to 1.0
merge
add comments to clarify handling of salt and hash
fix Julia on Ubuntu/Docker
give julia a profile directory and access hash, this closes a hole on multiuser machines.  the crux of this is copying the config from the profile that julia-install sets up into the one we dynamically create.  this means each plugin has to have its own profile directory.  also, remove code for obsolete feature for specifying path to python.
remove ruby from known plugins since it has a security bug on multiuser systems.  users can still add it manually from internal URL (served by beaker)
Fix Issue #661 by passing proper matched text received from backend to core (looks like it was introduced in ipy2 protocol), Also remove mysterious adjustment on dots that seems to cause a further problem.
move "run all cells" item from its own menu to the notebook menu
remove the evaluators menu, as discussed
fix node plugin by adding missing Q.defer object to evaluate method
revert: bring back evaluator menu
remove evaluators menu but leave the mechanism for keeping track of it in place so that it can more easily be brought back
remove debug logs