Updated Brazilian Portuguese translation
Updated Spanish translation
Fix errors changing all-day event to timed event: Bug #731808

is_all_day is now a read-only property with result generated by
examining other properties, which is a better way to go (although
it does mean losing notifications when it changes; may need to
install a signal at some point).  Also, inspection of library code
indicates libical doesn't consistently replace properties and may
simpy add new ones, even if spec requires one and only one.  Going
forward, need to enforce this manually.
Miscellaneous fixes
Linkify event description: Bug #726846
Move locale initialization into main.vala: Bug #731231

Need to move locale/gettext initialization into the very beginning of
main() in order to ensure it's respected throughout the run of the
application.
Localize Week view day header labels: Bug #731723

The ordering of the Week view day header labels needs to be available
for localization.

Because strftime() returns unsightly leading zeroes for some of the
new formats, a utility method to strip them (and some tests) are
included.
Permit am/pm as separate token in Quick Add: Bug #731634
Merge branch 'master' into wip/725785-create-recurring