Refactor and update bot management and routing

- Update `.gitignore` to include `lab/` for backtesting and raw data.
- Refactor `app.py` to improve error handling and logging.
- Remove deprecated files: `core/bot_logic.py`, `core/bots/base_bot.py`, `core/bots/manager.py`, `core/db/database.py`, `core/routes/api_analysis.py`, `core/routes/api_bots_analysis.py`, `core/strategies/logic_ma.py`, `core/strategies/logic_rsi.py`.
- Modify multiple files to enhance bot management, routing, and strategy handling.
- Update JavaScript and HTML templates for better UI and functionality.

node_modules/json-buffer/README.md

@@ -0,0 +1,24 @@
+# json-buffer
+
+JSON functions that can convert buffers!
+
+[![build status](https://secure.travis-ci.org/dominictarr/json-buffer.png)](http://travis-ci.org/dominictarr/json-buffer)
+
+[![testling badge](https://ci.testling.com/dominictarr/json-buffer.png)](https://ci.testling.com/dominictarr/json-buffer)
+
+JSON mangles buffers by converting to an array...
+which isn't helpful. json-buffers converts to base64 instead,
+and deconverts base64 to a buffer.
+
+``` js
+var JSONB = require('json-buffer')
+var Buffer = require('buffer').Buffer
+
+var str = JSONB.stringify(Buffer.from('hello there!'))
+
+console.log(JSONB.parse(str)) //GET a BUFFER back
+```
+
+## License
+
+MIT