fixed module formatting (blank lines are not allowed) and added a mayaseed MAYA_CUSTOM_TEMPLATE_PATH environment variable
simplified and improved calling imf_copy to convert textures
began building pymel based attribute editor template
added workaround for badly formatted environment variables on windows and reinstated file checks
Merge branch 'master' into new_render_settings_editor
added remaining placeholder attributes
grey out un used attribute editor attributes
finished render layer gui and code cleanups
added custom camera selection attribute
fixed bug where old menu items were not deleted before re populating
fixed bug when re-selecting the same camera
fixed bug in refreshing non initialised editor layouts
added custom environment node picker
removed old ms_render_settings editor template
load ms_render_settings ui on startup
added copyright notice
updated date in copyright notice
removed old render layer code