Modify comparison plots fix error

Modified comparison plots - scaled to mean.  added SEDAR 10 index.
fixed missing comma in filters by month for method 2 and 3.  added
"results='hide" so output from glm not printed.
not sure
modified print statements to messages

print statements are difficult to control in knit, changed them to
messages and then in .rmd add the chunk option "message=FALSE"
r code from rmd now...previously pandoc code

Old pandoc code renames gag_glm_toPDF.r