Moved Angular dir to where client can reach it

The lib/ dir in our source tree is for server-side libraries only;
client-side Javascript libraries, loaded by the browser, should
live somewhere under src/ because our Apache config makes
src/ the root of the website (via DocumentRoot). Moving
Angular dir accordingly.
Helper lib for JSON-RPC from Angular
Update the sample admin app for the new JS paths
More Javascript path fixes
Make User_list_model return all results

The regex search for email addresses matching "ser" was test code that had accidentally gotten checked in; removing it.
Demo code for calling JSON-RPC API

This demonstrates two ways to call the JSON-RPC API: first
by hand, and then with the helper library I just wrote.
WIP on admin CRUD: Halfway there

The idea of this proof-of-concept is that the <user-data>
directive will eventually be a nice display of all the relevant
data about a user (name, email, and so on). Right now it's
just showing the results of a database query as text.

So far I can get the directive to fire off once when I load the
page, and it's loading the user data correctly via JSON-RPC.
But I can't get the links in the table to update the userid
value that the directive sees. There's something about
scopes that I'm not fully grasping yet; I'm using isolate
scopes, but I want to share a specific name between the
child and parent scopes. Perhaps using routes would be
better for what I'm trying to do...?
Add Zurb Foundation CSS to make forms look nicer

Order of the CSS entries is important; if Foundation comes
after sf.css, it will overwrite some of the designer's choices
and make the front page look bad. But if Foundation comes
before sf.css, then sf.css overwrites some Foundation CSS
and the front page still looks like the designer intended it.
WIP on admin CRUD: Finally working

I spent all day on this yesterday and couldn't figure it out,
but now I finally have this working: clicking on a user email
address (or username, as it will be in the final version) will
update the vars.userid variable. Elsewhere in the page I
have a watch set on vars.userid: when it changes, the new
userid value is used to load a user record from the database.

Next step: putting a nice pretty face on it all.