Fix locale data and upgrade intl-* libs

[ericf]

This fixes the locale data by upgrading all the intl-* libs to latest, adds support for selectordinal arguments in messages, and the now option to {{formatRelative}}.

Fixed Locale Data

This vastly improves the locale data in the following ways:

• Added locale data for all leaf locales which differ from their root locale's data; e.g. "zh-Hant-TW" is not the same as "zh".
• Properly de-duplicate data for all CLDR locales by correctly traversing a locale's hierarchy of ancestor locales.
• Added data for the following languages: aa, agq, bas, bh, ckb, dav, dje, dsb, dua, dv, dyo, ebu, ewo, guw, guz, hsb, ia, in, iu, iw, jbo, ji, jv, jw, kaj, kam, kcg, khq, ki, kln, kok, ksf, ku, lb, lu, luo, luy, mer, mfe, mgh, mo, mua, nah, nmg, no, nqo, nus, ny, pap, prg, qu, rn, rw, sbp, sh, sma, smi, smj, smn, sms, swc, syr, tk, tl, twq, vai, wa, wo, yav, yi, zgh

  Upgraded intl-* Dependencies

The following low-level FormatJS packages have also been upgraded which provide and take advantaged of the improved CLDR locale data:

• grunt-extract-cldr-data@2.1.1
• intl-messageformat@1.1.0
• intl-relativeformat@1.1.0

  Added selectordinal Support for Messages

intl-messageformat@1.1.0 adds support for selectordinal arguments in messages; e.g.:

This is my {year, selectordinal,
    one {#st}
    two {#nd}
    few {#rd}
    other{#th}
} birthday.

Added now Option to {{formatRelative}} Helper

intl-relativeformat@1.1.0 adds support for specifying the "now" value from which relative time is computed. This change adds a new now hash option to the {{formatRelative}} helper which will pass along that value to IntlRelativeFormat#format() method.

[yahoocla]

CLA is valid!

[caridy]

LGTM