Added auto-upload code for the website.

Merged with master.
Added one boolean command line option "upload".
Uploading will only be activated if noth the sampling option and upload option are set.
Added a sample configuration file to show how to configure auto-uploading.
Currently only support DBMS parameter collection on MySQL and Postgres. More DBMS support can be added by adding more subclass of DBParameterCollector and expand the if-else statement in DBParameterCollectorGen.