Changes in Auto Grow API docs.
Registered "Utils" group in bender.js.
Added tests for setHtmlWithRange2 and getHtmlWithRange methods of bender.tools.
Added extra tests with white spaces.
Renamed getHtmlWithRange -> getHtmlWithRange2.
Renamed test files. Renamed set/getHtmlWithRange2 -> set/getRange.
Ported tests for set/getHtmlWithRange/Selection, ported miscellaneous utility tests.
Added basic tests for bender.tools.set/getSelection.