Use zero-padded day of the month in DE+FR

Currently, dates get formatted as "1.01.2014" which is inconsistent.
Other locales use "01.01.2014" or comparable as well.
Merge pull request #2085 from rbu/locale-leading-zero-in-date

Use zero-padded day of the month in DE+FR
Merge branch 'master' into x-y-extent-behavior-zoom