Update AI Changelog

AI_CHANGELOG.md

@@ -1,4 +1,13 @@
 # AI CHANGELOG
+## [Simplified app configuration and removed unused functionalities](https://github.com/fsal/streamlit-hf/commit/1488b2aa54cfc27a4adbc430ce53125766588c91)
+Fri Feb 2 15:13:56 2024 +0100
+- Removed unused imports and tools such as DuckDuckGoSearchRun and WikipediaQueryRun. Also removed the usage of the load_tools function.
+- Simplified the provider selection by setting it to 'OpenAI' by default, removing the need for the user to manually select it.
+- Removed the document_chat and use_faces checkboxes, setting their values to True and False respectively by default.
+- Simplified the chatbot configuration by always enabling the document chat feature and removing the need for the user to manually enable it.
+- Removed unused models from the model dictionary in the defaults.py file to simplify the model selection.
+- Changed the default temperature and maximum tokens values in the defaults.py file to fine-tune the chatbot's behavior.
+- Modified the get_runnable function in the llm_resources.py file to always return a RetrievalQA object with the return_source_documents parameter set to True.
 ## [Updated Dockerfile, Streamlit app, and default settings](https://github.com/fsal/streamlit-hf/commit/64ddbf9a83b76663d86c52c18c956c825f304ae2)
 Fri Feb 2 12:15:17 2024 +0100
 - 1. Dockerfile: Changed ownership of copied files to 'appuser' and added XSRF protection flag to Streamlit command.