Function get_approval_comment_body update for dust

This is to indicate the user is being rewarded via beneficiary rewards vs an upvote when their flag does not meet our SBD minimum payout threshold. Also, enclosed the code pulling the category in a try - except so that key errors are no longer a bot "show-stopper" (requiring admin intervention to restart).

sfrbot.py

@@ -54,14 +54,27 @@ def get_abuse_categories(comment_body):
     return cats
 
 
-def get_approval_comment_body(flagger, abuse_categories):
+def get_approval_comment_body(flagger, abuse_categories, dust=False):
     """ assemble the body for the flag approval comment """
-    cat_string = ''.join([cfg.CATEGORIES[cat] for cat in abuse_categories])
-    body = 'Steem Flag Rewards mention comment has been approved! ' \
-           'Thank you for reporting this abuse, @{}.\n{}\n\n' \
-           'This post was submitted via our Discord Community channel. ' \
-           'Check us out on the following link!\n[SFR Discord]({})'.format(
-               flagger, cat_string, cfg.DISCORD_INVITE)
+    cat_string = ''
+    try:
+        cat_string = ''.join([cfg.CATEGORIES[cat] for cat in abuse_categories])
+    except KeyError:
+        print('Key error grabbing category with '+str(abuse_categories))
+        logging.info('Key error grabbing category with '+str(abuse_categories))
+    if dust is True:
+        body = 'Steem Flag Rewards mention comment has been approved ' \
+               'for flagger beneficiary post rewards! ' \
+               'Thank you for reporting this abuse, @{}.\n{}\n\n' \
+               'This post was submitted via our Discord Community channel. ' \
+               'Check us out on the following link!\n[SFR Discord]({})'.format(
+                   flagger, cat_string, cfg.DISCORD_INVITE)
+    else:
+        body = 'Steem Flag Rewards mention comment has been approved! ' \
+               'Thank you for reporting this abuse, @{}.\n{}\n\n' \
+               'This post was submitted via our Discord Community channel. ' \
+               'Check us out on the following link!\n[SFR Discord]({})'.format(
+                   flagger, cat_string, cfg.DISCORD_INVITE)
     return body