Just a small issue - the name for the footer link is footer_link in the css:
https://github.com/OctoPrint/OctoPrint/blob/3ab84ed7e4c3aaaf71fe0f184b465f25d689f929/src/octoprint/static/less/octoprint.less#L987
And its footer_links in the html:
https://github.com/OctoPrint/OctoPrint/blob/3ab84ed7e4c3aaaf71fe0f184b465f25d689f929/src/octoprint/templates/footer.jinja2#L6

Slic3r: 1.3.1-dev-54a31ee
OS: Ubuntu 18.04.4

Load STL
Select model.
Right click - Rotate - Around z axis...
Input 90 - press ok
Model moves 90 degrees counter clock wise as expected.
Input 90 - press ok
BUG Model doesn't move.
Input 0 - press ok
Model doesn't move. (As expected for relative rotations, but not absolute.)
Input -90 - press ok
BUG Model rotates 180 degrees.

Around x

Hello,

nice Project! :)

Im getting a Thermal Runaway Protection error with the 5A Firmware.
Im not sure if this only belongs to the 5A, or something else.

Firmware:
119r05 and 119r06

Steps to reproduce:
Cold Printer
Start an Print on the SD Card
Target Temp on Display for Bed 55°C
It heats up, afer reaching the target Temp, it heats the Nozzle (Target 210°C)
While heating the No