Pass privateui/index.html through JSP page for better control
Send privateui only if role is MOD_LDAPADMIN, otherwise: forbidden
sec-roles header values have a "ROLE_" prefix
Access to CSS and JS in privateui/ and account/
Useless {}
/privateui/ was not mapped anymore
Previous name was not clear - this parameter is useful to forge public URLs
Update Spring from 2.5.6 to 3.2.5 - allow to use new functionalities
Update dependency and namespaces
Typo
Add `publicContextPath` attribute to JSP to forge absolute CSS and JS URIs

In JSP pages, the CSS files, for example, are changed from

```
	<link href='../account/css/bootstrap.min.css' rel="stylesheet" />
```

to

```
	<link href='${publicContextPath}/account/css/bootstrap.min.css' rel="stylesheet" />
```

ie. to

```
	<link href='/ldapadmin/account/css/bootstrap.min.css' rel="stylesheet" />
```

This way, the JSP files may be called for any URI depth level.

Note that we used an interceptor to add an attribute coming from the geOrchestra configuration,
the `ldapadmin/` publicContextPath. We could not use the common `${pageContext.request.requestURL}`
attribute in JSP files since it's equal to `ldapadmin-private` (name of the webapp) in
the default geOrchestra installation.
TODO - send a 403 error when forbidden
Merge remote-tracking branch 'origin/13.09' into issue455
Merge remote-tracking branch 'origin/13.09' into issue455
Create basic 404 error page
Insert header into 404 error page
Add dependency for JSP servlets
Add i18n to 404 error page
Add bootstrap3 CSS/font files + publish them + include in 404.html
Put in static files under _static/, and simplify url_rewrite rules

The reason to put under _static/ is that we possibly have to add a
rule in front-end webserver, better to chose a name that will remain
and contain all possible static files (as bootstrap ones).