While exporting key, gpg exports all keys which has substring of given name in their name

[rifel123]

for example, let's have public keys with name as follows:

• tester
• tester2
• tester3
• rifel123
  and user wants to export key tester with gpki export tester, then tester, tester2 and tester3 will be exported in one block.
  Described behaviour may lead to errors while review, where with multiple keys in request will raise exception due to filename and fingerprint mismatch.

TBD if we really need to have export/ import commands available to the user.

[rifel123]

in PR #59 while generating new identity export is now based on fingerprint.