* dfeet: rename to d-feet and make into a python script
* src/: rename to dfeet so we can use it as a module
* dfeet/_util.py (get_glade_file): default to glade_dir = "../ui" if DFEET_DATA_PATH is not set (i.e. you are running it from the dfeet directory
* ui/dfeet.desktop: added desktop file for installing
* ui/dfeet.glade: add a menu and toolbar for later use
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