1. Fix bug with font weight/style in ChunkCssApplier.
2. Fix bug with margin and margin-left/right/top/bottom css property priorities.
DEV-751: CompareTool usages refactoring.
DEV-759 Improvement in CompreTool based tests: move pdf compare to tearDown.
Reverted the changes in pdf comparison in tests.
Move multipleLeading field from Paragraph/NoNewLineParagraph to Phrase.
Removing SNAPSHOT version