To fix the libgcrypt11 dependency when installing Brackets download the library from here.

Download the version without debugging and symbols.  As of the current date this is

• libgcrypt11_1.5.3-2ubuntu4.4_amd64.deb

Then proceed to install Brackets using dpkg.  The current Brackets version I installed is “Brackets.Release.1.9.64-bit.deb”.