Utils::get_utc_time: do not use NTP

I'd rather have the time slightly off than rely on the NTP global pool
being healthy for backups.

If we want synchronized time, let's solidify our system-wide NTP server
and monitor it. And if need be we can build a good NTP infrastructure.
remove unused colorize dependency
remove trailing spaces
minor style adaptations

We're already using 1.9 hash syntax, might as well go all the way.
Also aligning a bit.
correct Utils::get_timstamped_key_name typo
remove Utils::get_utc_timestamp indirection
remove Utils::get_timestamped_key_name indirection
remove unused Utils::ungzip_file
avoid 3 newlines for consistency

Sorry, turns out the slightest details can throw me off.
I have to stop procrastinating now.
database/*: remove indirections
introduce report path
remove get_utc indirection
fixup! remove Utils::get_timestamped_key_name indirection
Cryo::VERSION 0.0.4
Merge pull request #3 from airbnb/pierre/reports

Reports