MB-5308: don't set 'for' attr. of label for checkbox inside it
MB-5308: don't set 'for' attr. of label for checkbox inside it

Apparently that's not working with Chrome 19. Removing "for" attribute
makes clicking on label work, i.e. it'll toggle checkbox as expected.

Change-Id: I676e69c150f9f1fe891fbf547702ea4b1395d302
Reviewed-on: http://review.couchbase.org/17339
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>

daverigby/ns_server,membase/ns_server,nimishzynga/ns_server,membase/ns_server,mschoch/ns_server,pavel-blagodov/ns_server,pavel-blagodov/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,t3rm1n4l/ns_server,daverigby/ns_server,membase/ns_server,vzasade/ns_server,membase/ns_server,pavel-blagodov/ns_server,ceejatec/ns_server,ceejatec/ns_server,ceejatec/ns_server,mschoch/ns_server,ceejatec/ns_server,vzasade/ns_server,daverigby/ns_server,nimishzynga/ns_server,daverigby/ns_server,nimishzynga/ns_server,mschoch/ns_server,nimishzynga/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,daverigby/ns_server,membase/ns_server,nimishzynga/ns_server,ceejatec/ns_server,vzasade/ns_server,membase/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,t3rm1n4l/ns_server