- when opening pdf, jump directly to page
- ability to set the WHERE condition (allow editing the SQL query)
- Scale factors
- Abort running pdf preview generation when we search for something new
- Index .ebup
- Preview for: .txt, source code files, .ebup. 
- Stats: Number of results found
- PdfPreview: Files per file, or directory (so basically filter the 
results)
- PdfPreview: Remove arbitrary limit of 300