use a variable for the min number of jobs to collect

this variable determines after how many results the db is written to.
with a low value, it is written often and could more lock issues
if 2 threads concur for the db.

proxywatchd.py

@@ -136,6 +136,7 @@ class Proxywatchd():
 		self.mysqlite.close()
 		self.mysqlite = None
 
+		self.submit_after = 200 # number of collected jobs before writing db
 		self.echoise = time.time() - 3600;
 		self.ticks = time.time() - 3600;
 		self.jobs = []
@@ -199,7 +200,7 @@ class Proxywatchd():
 
 			self.collect_work()
 
-			if len(self.collected) > 50:
+			if len(self.collected) > self.submit_after:
 				self.submit_collected()
 
 			time.sleep(1)