Bug #1269381 - Clarify keyboard shortcut help.

The shortcut labels had to match the lowercase version of the key. In
some cases that didn't make as much sense as the uppercase version. For
example, Shift+/ brings up the help, but Shift+? (the uppercase version)
is more intuitive. Add a way to separate the label displayed from the
actual keybinding (which had to be the lowercase version).
Merge pull request #189 from kadams54/1269381

The shortcut labels had to match the lowercase version of the key. In
some cases that didn't make as much sense as the uppercase version. For
example, Shift+/ brings up the help, but Shift+? (the uppercase version)
is more intuitive. Add a way to separate the label displayed from the
actual keybinding (which had to be the lowercase version).
Adds basic UI component for the Deployer Bar.
Merge pull request #185 from huwshimi/deployer-bar-view

Deployer bar view
Ignore GUI service on export.
Merge pull request #190 from frankban/env-export-gui

QA:
- make devel/debug/prod;
- deploy charms/bunldes;
- change settings, constraints, num units;
- export the environment and check the 
  resulting yaml is ok;
- refresh;
- deploy mysql;
- deploy wordpress, naming the service as "juju-gui";
- relate the two;
- export the environment and check 
  juju-gui is not included in the yaml.