TST: ujson dont force endianness #4274
Merge pull request #4284 from Komnomnomnom/ujson-tst-endianness

TST: ujson dont force endianness #4274
TST: add basic clipboard test
TST/CI: add clipboard deps to travis
TST: skip test if not foudn
TST: try with xvfb
TST: disown the process
TST: bash does not like my syntax :(
TST: run in before scripts