Added a method to get an agile board by ID and to get a filter by Name to the JiraEnvironment class.
Added a method to get an agile board by ID and to get a filter by Name to the JiraEnvironment class.

elestedt/Jira.SDK,kst83/Jira.SDK,computingman/Jira.SDK,amitla/Jira.SDK,jonas0007/Jira.SDK