Merge pull request #24 from marcesher/nil_int64_fix

Ensure that date-calculated fields always have an int64 value. Fixes #23
Merge pull request #26 from marcesher/names_too_long

Names too long. Fixes #22
Merge pull request #27 from marcesher/public_only

Import: only import public repositories. Fixes #25
Merge pull request #28 from marcesher/bad_connection

Import: bad connection. Addresses #21
Check if the pull request user exists
Comment out db logging
Don't panic on errors, just continue and log
Merge branch 'master' into help_wanted

Conflicts:
	common/db.go
	govcode/import.go