Play with image annotation.
Make top, bottom, left, right work.
Rename and test font icons.
Fix positioning inside figure container.

Use absolute positioning within relative placed container, so
put annotations inside container instead of appending them to
the body.
Set proper icons.
Cleanup of legacy code.
Move lib to final destination.
MT#7803 Fix invoice list preparation.

Caused js error on adding new pbx device.
MT#8299 PoC to render phone image with annotations
MT#8299 Show annotated pbx device.
MT#8299 Successfully create new pbx device.
MT#8299 Also properly edit pbx device.
MT#8299 Show disp name and ext in pbx dev config
MT#8299 API: Use multipart upload for device model
MT#8299 API: create full device model with labels
MT#8299 Use extended form for device model

Define x, y, linepos via HFH instead of validating it manually.
MT#8299 Create/Edit models via web interface.
MT#8299 API: align PUT for pbxdevicemodels.

Use multipart/form-data as we do in POST.
MT#8299 Cosmetical fixes for dev models.