Only issue a password change request from JS if the password
fields have been filled out.
(grafted from 72d79d43bc6a90c3c5318ebc216a8d950db7babc)

--HG--
extra : source : 72d79d43bc6a90c3c5318ebc216a8d950db7babc
Revert accidental commit of CSS changes.
(grafted from d378d2dcdf3e9277de2392d7b6573dbd77f091e5)

--HG--
extra : source : d378d2dcdf3e9277de2392d7b6573dbd77f091e5
Merge pull request #73 from ehuelsmann/1.4

Resolve #1147: Need to enter password when changing preferences