core/server.py:  `ApplicationWebSocket.wrap_and_send_js()` now uses `pkg_resources` to find the libwrapper.js template.
core/server.py:  `ApplicationWebSocket.enumerate_themes()` now uses `pkg_resources` to find available themes.  It also no longer includes the logic for sending the terminal colors since that is now handled via app_terminal.py.
Convenience Terminal Plugin:  Added __init__.py files to this JavaScript-only plugin so that it gets an entry point.  This should have it working again.
Help Plugin:  Added __init__.py to ensure it gets an entry point.