added package.use file for new packages. they were not added when the original resource declarations in the corresponding pattern were.
Added portage files for flash and fvwm

- The license acceptanec is necessary for flash to install properly.
- The fvwm enables USE flags
Removed dwb use file and added libreoffice use file declaration.
removed dwb and dwb use file declarations from xorg-server pattern
Updated mira's pattern declarations.

- Changed network interface name from eth0 to wlan0 so that the wireless 
  interface is used.
- Removed ldap pattern declaration. Workstations will use actual local users 
  instead of centralized users. Centralized users are reserved for server nodes.
- Removed user byronsanchez from kvm group. Workstations will run virtualbox 
  instead of KVM for virtualization. So the kvm group will not be needed nor 
  will it be created.
Set bluetooth toggle hotkey to Fn+F5 on the Thinkpad T61

This is necessary because bluetooth is not started on boot via a kernel 
parameter. This hotkey assignment and the corresponding script ensure that 
bluetooth can be toggled on and off in spite of this.