PDF report cosmetic fixes

See #104, release log:

• a47093c by @yegor256: #104 partial aggregation
• 57a2995 by @yegor256: polish
• 8be0350 by @yegor256: polished
• 8472bac by @yegor256: works offline
• 43f0b64 by @yegor256: discover
• 594efa6 by @yegor256: clone without internet
• 878323c by @yegor256: #110 unregister
• 3bc654f by @yegor256: #107 extra protection
• c3e8d4b by @yegor256: #109 silence
• 4e37627 by @yegor256: #107 fix csv
• ce4fa98 by @yegor256: #108 pmd fixed
• 7bbacfd by @yegor256: #105 name fix
• c339abf by @yegor256: #105 typo
• cf396c2 by @yegor256: #105 typo in install of jpeek
• 488dc97 by @yegor256: #105 if
• 2f6c47d by @yegor256: #105 ignore failure
• 56b5ce4 by @yegor256: #105 fail on install
• 1b5420c by @yegor256: #105 tlmgr init-usertree
• f507867 by @yegor256: #105 sudo
• ed128b8 by @yegor256: #105 install first
• and 16 more...

Released by Rultor 2.0-SNAPSHOT, see build log