**BUG**
Concise problem statement:
The image in this example is linked into the schematic using the 'Image' button on the 'Drawing Tools' palette.
It shows correctly in the schematic but shows
only as a:
Linked image not found
error box in an exported pdf.
Steps to reproduce bug:
1. Document > Export > pdf
Results:
Image is replaced by
>`Linked image not found`
error box
Expected results:
Image should show in exprted pdf as it does in png and svg export.
Url:
https://easyeda.com/file_view_Cannot-export-linked-image-demo_Aw2kCwc6n.htm
Browser: Chrome on Kubuntu 12.04 LTS
