extra/runner/templates/testrun.html: Cleanup: Whitespace & field order
extra/runner/templates/testrun.html: Cleanup: Whitespace & field order

In the next two commits I'll be adding more code to the "failure reason"
and "extra columns" fields, so some vertical whitespace will make things
a little bit clearer.

wmanley/stb-tester,LewisHaley/stb-tester,martynjarvis/stb-tester,stb-tester/stb-tester,wmanley/stb-tester,wmanley/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,stb-tester/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,stb-tester/stb-tester,LewisHaley/stb-tester,martynjarvis/stb-tester,LewisHaley/stb-tester,martynjarvis/stb-tester,LewisHaley/stb-tester,stb-tester/stb-tester,wmanley/stb-tester,LewisHaley/stb-tester,wmanley/stb-tester,LewisHaley/stb-tester,LewisHaley/stb-tester