Various enhancements in build system.

bin/flow123d.sh
	add random number to the lock file, when using parallel jobs
        in Jenkins the time is not enough to be unique.

CMake/*
unit_tests/CMakeLists.txt
	remove unnecessary messages, simplify CMake output
        redirect stdout of Armadillo install

CMake...InstallPetsc.cmake
	remove umfpack from PETSC_CONFIG==full on windows (not supported)

CMakeLists.txt
	separate output form configuration of individual libraries

makefile
	do not output commands for most common targets
	remove packaging targets (implemented in CMake/CPack)

jenkins_jobs_template.yaml
	- run all integration tests
	- poll release builds once a day