CallingCodes: adjust trigger-space.

- Remove 'country code'/'country codes'
- Add 'dial-in' as alternative for 'dial in'
- Add more combinations of the various words

Fixes #682...in part.
TimezoneConverter: Adding failing test for bug #684
TimezoneConverter: Permitting lowercase timezones
TimezoneConverter: Explicitly returning output
TimezoneConverter: Adding HTML output and some tests to ensure the text and html output is the same
TimezoneConverter: Adding CSS copied from Conversions
TimezoneConverter: Adding primary span around both times
Merge pull request #683 from mwmiller/cc_not_cc

CallingCodes: adjust trigger-space.
Merge pull request #685 from duckduckgo/mintsoft/TimezoneConverter

TimezoneConverter: Fixing #684