ui/: Move to `lazycat/'

* ui/: Move to `lazycat/'.
* lazycat/Makefile.am (SUBDIRS): Update.
* configure.ac: Update.
* Makefile.am (SUBDIRS): Update.
proxies/: Move to `lazycat/'

* proxies/: Move to `lazycat/'.
* lazycat/Makefile.am (SUBDIRS): Update.
* configure.ac: Update.
* Makefile.am (SUBDIRS): Update.