Examples, components: Czech translation update by Vaclav Valicek, bugs 23604, 23606, 23607, 23608, 23609, 23610, 23611, 23613, 23615, 23616, 23621.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39816 4005530d-fff6-0310-9dd1-cebe43e6787f
Docs: added Vaclav Valicek to contributors list

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39817 4005530d-fff6-0310-9dd1-cebe43e6787f