feat: add sqlstring and supports-color modules

- Introduced sqlstring module for SQL escape and formatting.
- Added supports-color module to detect terminal color support.
- Created dashboard and login views with Bootstrap styling.
- Implemented user schema in SQL with mock data for testing.

backend/node_modules/concat-map/.travis.yml

@@ -0,0 +1,4 @@
+language: node_js
+node_js:
+  - 0.4
+  - 0.6