Update INSTALL.
Tests: update scripts for Travis CI
Tests: fix scripts for Travis CI
Tests: fix scripts for Travis CI
Tests: fix scripts for Travis CI
Tests: fix scripts for Travis CI
Tests: update scripts for Travis CI
Tests: update scripts for Travis CI
Tests: update scripts for Travis CI
Tests: update scripts for Travis CI
Revert "Tests: update scripts for Travis CI"

This reverts commit e1444ba0db4c378642b036ebd0c025d7970bbc5c.
cmake up: fix Qt5 build on Travis CI
Revert "Revert "Tests: update scripts for Travis CI""

This reverts commit 0d1c4133b6603dd411c9f8d92739c7f841fc210c.
Tests: add temporary debug messages into scripts for Travis CI
Tests: update scripts for Travis CI