v1.7

Fixed yet another grave bug and added some features thanks to @ildar for reporting them

• the User-Agent header is now checked by the PDF server as well (ef703f7)
• datasheets are saved to the Downloads folder (#15)
• text snippets from other apps can be shared as a part name to search for (#17)

Also, translation to Brazilian Portuguese was added (#14) thanks to @afmachado for doing it