added support for providing an additional param to the options for link formatter, that can be used instead of id(default) which is passed as context to any action
added an if else condition to pass the redirectColumn based on its existence, so that its not parsed as undefined string instead of null or undefined, added a description for the use case concerning these changes
Merge pull request #246 from PrimeRevenue/bug/action_formatter

added support for providing an additional param to the options for link ...