Use indentation character and level from Sprint 37 preferences system (mostly)

I can't get it to add the updated value to the global namespace...

I NEED to reassign a new shortcut...
The toolbar icon is back! :D
I can now get the image dimensions! :D

Link #6
Input fields can now be updated with the values

and logo (roughly) replaced with the opened image. Obviously disabled
for now. ;)
#6
Still trying to get the variable in the global namespace
Remove duplicate declaration
User indent preferences are now used! Finally! :D
Add initial change log for v1.2
Sort English string keys, add image browse button
Oops
CSS for new and upcoming code
Minor
Lots of internal work, to be activated later :wink:
Update package.json
At last! The user can browse for and select an image, and everything will be filled in for them! :D

There are obviously still some things to work out, but I finally
achieved this. Woo hoo! :D :party: :cake:
The image source is now filled in too! :D
Minor
Indent German local file to match English local file
Fixes preparing for image validation
Small changes preparing for JS