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
Update templates to match duckpan new updates
whoops, fix typo
Merge pull request #686 from duckduckgo/zaahir/update-template

Update Goodie Template (for duckpan new command)
Tips: use as more general percentage calculator.

The guts were already here, just made them all work properly.

- Greatly expand triggering and allow guard to kick back false
  positives
- Use NumberStyler to handle and "make pretty" a variety of number
  formats
- Use named captures to make things easier to follow.

Fixes #690.
Merge pull request #691 from mwmiller/tipsy

Tips: use as more general percentage calculator.
Conversions: Upgrading to 0.24 to support areas and volumes; adding tests to prove new units
Merge pull request #694 from duckduckgo/mintsoft/conversions_squared_cubed

Conversions: Upgrading to 0.24 to support areas and volumes
DuckDuckGo: add t-shirt options.

As many reasonable aliases of which I could think.

Fixes #676.
Merge pull request #695 from mwmiller/shirts

DuckDuckGo: add t-shirt options.
add hex/base64 formatting option to md5 goodie
minor code style tweaks to MD5 goodie