Merge pull request #96 from sharelatex/bg-cache-eps-to-pdf-converted-files

cache pdf files generated by epstopdf

app/coffee/ResourceWriter.coffee

@@ -80,6 +80,8 @@ module.exports = ResourceWriter =
 						should_delete = false
 					if path.match(/^output-.*/) # Tikz cached figures
 						should_delete = false
+					if path.match(/-eps-converted-to\.pdf$/) # Epstopdf generated files
+						should_delete = false 
 					if path == "output.pdf" or path == "output.dvi" or path == "output.log" or path == "output.xdv"
 						should_delete = true
 					if path == "output.tex" # created by TikzManager if present in output files