Server/Plugins/ALC: do not require a name attribute
Client: fix statistics for only-important mode

Do not report non-important entries as bad entries in only-important mode.
man/bcfg2.conf.5: updated man page

Commit 73037d1f2a193b61fd59724ce81760bfe2f50348 adds a new entry to the
man page in the rst source file. This updates the generated man page.
Merge pull request #224 from AlexanderS/fix-acl

Server/Plugins/ALC: do not require a name attribute
Merge pull request #225 from AlexanderS/fix-stats-only-important

Client: fix statistics for only-important mode
Merge pull request #227 from AlexanderS/update-man

man/bcfg2.conf.5: updated man page
Fix nondeterministic bruteforce_decrypt test

The existing test_bruteforce_decrypt was nondeterministic; in some
cases, the generated ciphertext would be decryptable with one of the
wrong passphrases, which would cause test failure even though it
decrypts to gibberish. This checks that by splitting it into two
tests:

1. Test with an invalid ciphertext, so that EVPError is always raised;
2. Test with valid ciphertext, and check for *either* EVPError or
   decrypted plaintext that is not the same as the original plaintext.