pidgin/pidgin

Add a donate link under the help menu and move the debug window item to the tools menu

Testing Done:
Ran and verified the menu items work.

Reviewed at https://reviews.imfreedom.org/r/2080/
[wrap-hg]
directory = libgnt
url = https://keep.imfreedom.org/libgnt/libgnt
revision = b7174f76d7ee