Add productive_time = work_time if productive_time is not defined, add ability for adding time equals zero

Bug 1191706: When editing flag types, components do not match the selected product when classifications are enabled
r/a=dkl

Bug 1196969: Custom fields whose visibility depends on the product are not displayed/hidden correctly
r=gerv a=sgreen

r=gerv a=dkl

r=LpSolit a=glob

r=dylan,a=justdave

r=glob,a=glob

r=glob,a=glob

r=dkl,a=sgreen

r=sgreen,a=glob

Bug 1047405: Comment tagging GUI not fully localizable because of text in Javascript instead of template
r=sgreen,a=glob

r=dkl, a=sgreen

Bug 726696 - All authenticated WebServices methods should require username/pass, token or a valid API key for authentication
r=dkl, a=sgreen

r=gerv,a=sgreen

r=glob a=justdave

Bug 984980 - add framework for keyboard shortcuts, and key to switch between preview and edit mode. Patch by <arnold@archlinux.info>, r=gerv, a=justdave.

non-comment elements
r=gerv, a=glob