Bug 16822: Make koha-common call koha-plack without --quiet

Bug 16822: Make koha-common call koha-plack without --quiet

This patch removes the --quiet option switch in koha-common.init so
problem information is not hidden for sysadmin users.

To test:

- Have plack enabled for a koha instance:
  $ sudo koha-plack --enable kohadev
  $ sudo koha-plack --start  kohadev
- Run:
  $ cd kohaclone
  $ debian/koha-common.init {start|stop|restart}
=> SUCCESS: No behaviour change
- Disable the 'cgi' apache module:
  $ sudo a2dismod cgi
- Run:
  $ debian/koha-common.init {start|stop|restart}
=> FAIL: No warning is shown
- Apply the patch
- Run:
  $ debian/koha-common.init {start|stop|restart}
=> SUCCESS: Warnings show up
- Sign off :-D

Signed-off-by: Liz Rea <liz@catalyst.net.nz>
Perfect thanks :)

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>