Issue #85: Add simple log decorator.
Issue #85: Update LogUtil to simplify returned logger.
Issue #85: Clean up logging logic.

* Ensure LogUtil usage for generating loggers.

* Delegate log level checks to logger.
Clean up imports.
Issue #85: Apply arguments properly when calling logger methods.
Merge branch '#85/clean-up-logging' into develop
Issue #88: Order locale options alphabetically.
Issue #90: Update version to 3.6.
Issue #60: Update app descriptor properly for 3.6.
Issue #89: Fix image format logic switch statement falling through to default.
Issue #89: Preserve image format for non-dynamic layers.
Issue #89: Rename function that ensures known dynamic layer image formats.
Merge branch '#89/improve-image-format-handling' into develop
format
Issue #93: Preserve 'Add Portal for ArcGIS Basemaps' option when converting from a web map.
Issue #96: Add cached image services as tiled layers.
Issue #97: Fix issue caused by expecting wrong parameter types for query item fault handlers.
Remove unused imports.
Merge branch '#97/fix-portal-item-query-fault-handlers' into develop
Issue #83: Make portal-item-icon utility more reusable.