Issue #1602226 by RobKoberg, hswong3i: Error while trying to find the common path for enabled extensions of project imce_tools. Extensions are: imce_dir_man, [error].

Issue 1706460 - reported by ladybug_3777 - correction to permission declaration required to access imce directory manager administration screen

Issue 1706460 - reported by ladybug_3777 - adjusted readme to indicate permissions necessary for accessing configuration

Issue 1064538 - correcting ajax type parameter to be GET instead of the incorrect text - patch from kongoji

Adjustment to imce_file_path to correct an issue where the file path does not populate correctly after navigating the directory tree

Issue #1065646 - addition of option for case insensitive searching, also includes rework of mechanism for building query and specification of selected filepath during search