Merge branch 'master' of code.it4i.cz:sccs/docs.it4i.cz into anselm2

scripts/combinations.py

+import itertools
+import re
+l = ['A', 'S', 'U', 'T']
+mask = ''.join(reversed(l))
+for i in range(1,len(l)+1):
+    for comb in itertools.combinations(l, i):
+        reg = "[^%s]" % ''.join(comb)
+        print re.sub(reg,"-", mask)