reporter/file-parser: hitsAreSingleShot -> maxPossibleHits (1, n, unlimited)
cobertura-writer: Set hits to 1 if maximum is HITS_SINGLE
html-writer: Don't write out hit info for non-code lines
html-writer: Don't report hits for the merge-parser, simplify output
robot-framework: Correct tests (after accumulation)
data: Temporarily remove bcov.css
data: Readd bcov.css (hopefully as ACSII)