tests: add -v option for command "tests" to increase verbosity (CMake)
tests: run tests after build on Travis CI
core: add option "--yes" for add-apt-repository (Travis CI)
core: download debian package libcpputest-dev from weechat.org (Travis CI)
core: replace package libcpputest-dev by amd64 version (Travis CI)
core: remove unused ubuntu PPA (Travis CI)
tests: remove test of han char in utf8_char_size_screen (failing on Ubuntu Precise)
tests: remove test of han char in utf8_strlen_screen (failing on Ubuntu Precise)
Merge branch 'travis-tests'