sanity_check_* should allow for user selectable pre and post periods

[serbinsh]

sanity_check_fine <- function(df, Dates=unique(df$Date), 
                              Pre_Threshold_Temp_Upper=0.2, 
                              Pre_Threshold_Temp_Lower=0.2,
                              Post_Threshold_Temp_Upper=5, 
                              Post_Threshold_Temp_Lower=0.2) {}

We could easily add two params that define the time period we consider pre-pulse and post-pulse. Currently defaults are

pre-pulse(00:00-02:00)
post-pulse (02:01-15:00)

[serbinsh]

Aslo we need to improve what the outputs are, why they are formatted as they are, and the expected usage of the returned data from the function with examples. at the moment its not clear to me what the three outputs are needed for vs a QAQC dataset we can use for the next step