Release version 0.15
shell: globally stylizes patternfly dropdown menus

initializes patternfly dropdown menus globally, removes local
instantiations, and adds patternfly style to realm dropdown

Fixes #776
Closes #854
Reviewed-by: Stef Walter <stefw@redhat.com>
web: Displayed the host name when loading the login screen.

Fixes #759
Closes #873
Signed-off-by: Stef Walter <stefw@redhat.com>
 * Consistent use the property syntax for accessing .hostname
shell: Change default byte suffix to KB

Instead of using the more geeky KiB and such suffixes, use
KB consistently. Try to use 1024 factor as much as possible
for consistency.

Fixes #704
Closes #869