resources: Add set as default key to the default order

* R/resources.R (DEF_ORDER_SPECTRA): Summary table should be ordered
by sets first and then the quality and intensity as criteria.

R/resources.R

@@ -189,4 +189,4 @@ MS2_SPEC_COLS <- c("adduct","ID","CE","rt","Files","spec","ms2_max_int")
 ## MS1 spectral table columns
 MS1_SPEC_COLS <- c("adduct","Files","ID","eicMS1","ms1_int","ms1_rt","ms1_mean")
 ## Default order of spectra in summary table
-DEF_ORDER_SPECTRA <- c("qa_pass","ms1_int","adduct","mz","tag")
+DEF_ORDER_SPECTRA <- c("set","qa_pass","ms1_int","adduct","mz","tag")