Make "application agreement" questions required

As requested by the 2014 Scholarship committee, the three questions in
the "application agreement" section must now be answered in the
affirmative before the application will be accepted.

Bug: 59819
Change-Id: If3177180d9d3839dfd27465b916ab58ab8286df3
Fix text errors

* Change form-intro-faq to link to 2014 FAQ
* Correct dates of 2014 Wikimania

Bug: 59839
Change-Id: Ic16ce8160f86ec82ad200a2faa227ff5661a1b26
Add missing i18n for search region

Bug: 59844
Change-Id: Ia41fdf3984f46abbe4d9183cbee49572c2cc4721