(#1862)
a fix for the 0.01% who use comments in prompts. Before this, styles could be considered part of a comment.
strips comments from prompts first, then from each applied style before merge
same process for extracting styles from prompts
updated tooltips for toolbuttons to apply styles
removed code made redundant by this change, from modules.processing_scripts.comments
--styles-file change to append str
--styles-file is [] then defaults to [styles.csv]
--styles-file accepts paths or paths with wildcard "*"
the first `--styles-file` entry is use as the default styles file path
if filename a wildcard then the first matching file is used
if no match is found, create a new "styles.csv" in the same dir as the first path
when saving a new style it will be save in the default styles file
when saving a existing style, it will be saved to file it belongs to
order of the styles files in the styles dropdown can be controlled to a certain degree by the order of --styles-file
