[#37327] Inconsistent numeric input conversion.

Issue was actually that micrometer was not drawing correctly (from r58165), reverted that fix and instead use utf8 drawing for editmode metrics when using a unit system (we already had a similar hack for surfaces and volumes, anyway).

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@61198 954f8c5b-7b00-dc11-b283-0030488c597c