Merge pull request #4 from qinfengling/cgminer-webui-avalon2

Add default value for stats
Remove useless information for end users
Cleanup the pool status
Merge branch 'mycgminer-webui-avalon2' into cgminer-webui-avalon2
Merge pull request #5 from qinfengling/cgminer-webui-avalon2

Support 4 modules(max) in status page
Display the correct voltage and hashrate value
Merge branch 'cgminer-webui-avalon2' of git://github.com/BitSyncom/luci into cgminer-webui-avalon2