Add two new functions to manipulate with lists

Add list.skip(count) and list.take(count) functions to collect only
a part of original list.

Change-Id: Ic730713f0baad64385e37b36e378615482c7a75d
Closes-bug: #1362892
Merge "Add two new functions to manipulate with lists"
Merge branch 'master' into bp/actions-noauth