Fixes issue with webform email edit screen and local navigation. Webform implements this menu path as MENU_CALLBACK which prevents the local navigation fron being rendered/displayed. hook_menu_alter() is used to convert this menu path to MENU_LOCAL_ITEM
moved implementation of hook_menu_alter from Springboard Admin to Email Wrappers. This ensures this change is availale in situations where Springboard Admin may not be enabled.
Merge pull request #443 from JacksonRiver/7.x-4.x-778-webform_email_screen_local_nav

Fixes issue with webform email edit screen and local navigation.