Fix code style.
- Replace 1 tab with 4 spaces.
- Use 4 spaces indentation for all files.
- Fix PHPDocs.
Fix grammar error. Encrypt sensitive data. Add JavaScript validation.
Merge pull request #19 from sergeykalenyuk/improvement

Fix code style.
Use native translation system for templates.
Significantly improved indexing process.
Combined products and categories queries into one API call.
Move Algolia menu into System menu to save main menu bar space.
Add "Enabled" flag to configuration.
Add "Minimal Query Length" config value.
Refactor dashboard template.
Fix full text search.
Merge pull request #20 from sergeykalenyuk/improvement

Improvements