webui: Use sections to group options belonging together
Merge pull request #111 from vuntz/use-sections

webui: Use sections to group options belonging together
Also make identity driver settable in proposal

Otherwise, all the LDAP-related attributes are useless since the driver
won't be changeable.
webui: Also hide SSL section header when not using native frontend

We were hiding the content of the section, but not the header.
Merge pull request #113 from vuntz/ldap-full

Also make identity driver settable in proposal
Merge pull request #114 from vuntz/ssl-header-apache

webui: Also hide SSL section header when not using native frontend