Changes

[travis] Travis has his own venv where it installs "stuff". Now we
detect and us it in the launcher. [Steve Clement]
[travis] Require Python 3.6 to make build faster. [Steve Clement]
[doc] Some stats on build status/gitter etc. [Steve Clement]
[hashDecoded] cleanup for the VT message + PEP. [Alexandre Dulaunoy]

Fix

[faup] fix new return types (bytes to str) [Terrtia]
[Crawler] force domains/subdomains lower case (rfc4343) [Terrtia]
[showpaste] fix: #346, avoid None screenshots. [Terrtia]
[python requirements] rename file. [Terrtia]
[crawler] typo: domains down. [Terrtia]
[travis] LAUNCH.sh needs -l to launch... [Steve Clement]
[travis] Next round of travis fixes. LAUNCH.sh is the only launch
script needed. chg: [installer] Be way more quiet, watching unzips is
only fun during development. chg: [installer] Make the arch one +x.
[Steve Clement]
[installer] Avoid doing funky sudo pip install moves, it breaks
python on package managed python installs, if ever, use the --user
flag. [Steve Clement]
[travis] Try and require xenial (16.04) and see if it works better.
[Steve Clement]
[travis ] There are issues on the 14.04 build system of Travis. This
fixes it temporarily. [Steve Clement]
[Onion] typo. [Terrtia]