fixes #794 @gretchen, i turned off the help dashboard for the public user, and fixed a logic flaw, the users help is only supposed to show a few times when they are new users, not so much. i think with the new dashboards hopefully the guide wont be necesary but for now im keeping it but it will be a lot less often.

* it displays only 3 times,
* it displays 1 minute after a new user opens the app, so they have enought time to click around, before they see the guide, yes, eventually we will make it into unobtrusive "whats new" pop downs like YouTube...
fixes #807 makes the datalist show a hand (the usual symbol for links, or buttons) when you over over a datum.
fixes #786 moved customize and help back into the user menu, and off the nav bar to make space for the new corpus dropdown
Merge pull request #813 from cesine/master

Some user experience fixes