Fuzzy search on window spread filter is too narrow

[Ethan Hogue]

Steps to reproduce:
- open a terminal, Files window, and Firefox window
- press Super+W to spread windows
- type "terminal"
- WHAT WAS EXPECTED: the terminal window would not be filtered out
- WHAT HAPPENED INSTEAD: the terminal window is not listed.

However, if you type "firefox", the firefox window is shown because the regex matches.

I propose that not only are the windows in spread filtered by title, but also by
- application name, e.g. "gnome terminal"
- generic name, e.g. "web browser"
- application category, e.g. "multimedia"

This will more closely follow the search patterns in the dash + HUD search methods.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.1.2+14.04.20140220-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3
Uname: Linux 3.13.0-11-generic x86_64
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Sat Feb 22 20:32:25 2014
InstallationDate: Installed on 2014-02-19 (3 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to trusty on 2014-02-22 (1 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alexey Kulik (doctor-rover)]

This looks like a fairly reasonable suggestion.

[Marco Trevisan (Treviño) (3v1n0)]

This is a known issue, and something planned to be fixed (I actually left this as a TODO :P), see bug #1281297