ggplot: Beautify Labels in Facets

Fixing particular cases when faceting:
- Space and alignment for plots using facet_wrap(). https://plot.ly/~pdespouy/491 vs https://plot.ly/~pdespouy/595
- Clean "new text" annotations. https://plot.ly/~pdespouy/490 vs https://plot.ly/~pdespouy/594
- Angles on yaxis label