show profile picture on bot delete page, clean up icon display code

app/templates/bot/delete.html

@@ -13,10 +13,10 @@
 	
 	<div class="container centred">
 		<form method='POST'>
-			<div class="panel-icon large"></div>
+			<div class="panel-icon large" style="{{ 'background-image: url(\'' + icon + '\')' if icon else '' }}"></div>
 			<div class="container centred">
 				<p>Are you sure you want to <strong>permanently</strong> delete this bot?</p>
-				<p>The account on {{ instance }} will remain open, but your bot will stop posting from it.</p>
+				<p>The account on {{ instance }} will remain open, but FediBooks will stop posting from it.</p>
 				<a class="button btn-secondary" href="/"><i class="fas fa-times"></i> Cancel</a>
 				<button class="button btn-dangerous"><i class="fas fa-trash"></i> Delete bot</button>
 			</div>

app/templates/home.html

@@ -19,7 +19,7 @@
 	<div class="container" style="min-height: 300px;">
 		{% for bot in bots %}
 		<div class="row light">
-			<div class="panel-icon {{ "online" if bot['enabled'] else "offline"}}" style="{{ "background-image: url('" + bot['icon'] + "')" if bot['icon'] else "" }}"></div>
+			<div class="panel-icon {{ 'online' if bot['enabled'] else 'offline'}}" style="{{ 'background-image: url(\'' + bot['icon'] + '\')' if bot['icon'] else '' }}"></div>
 			<div class="panel-text">
 				{% set handle_list = bot['handle'].split('@') %}
 				<div class="panel-name">@{{ handle_list[1] }}<span class="subtle tiny">@{{ handle_list[2] }}</span></div>

app/webui.py

@@ -70,12 +70,15 @@ def bot_delete(id):
 	if bot_check(id):
 		if request.method == 'GET':
 			instance = id.split("@")[2]
-			return render_template("bot/delete.html", instance = instance)
+			c = mysql.connection.cursor()
+			c.execute("SELECT icon FROM bots WHERE handle = %s", (id,))
+			icon = c.fetchone()[0]
+			return render_template("bot/delete.html", instance = instance, icon = icon)
 		else:
 			# delete bot by deleting its credentials
 			# FK constraint will delete bot
 			c = mysql.connection.cursor()
-			c.execute("SELECT `credentials_id` FROM `bots` WHERE `handle` = %s", (id,))
+			c.execute("SELECT credentials_id FROM bots WHERE handle = %s", (id,))
 			credentials_id = c.fetchone()[0]
 			c.execute("SELECT client_id, client_secret, secret FROM credentials WHERE id = %s", (credentials_id,))
 			credentials = c.fetchone()