Fix robot group defensePower

Add comment for event.js
Add test
robotFactory now contains robot lists
refactor show resource
reverse code
Merge remote-tracking branch 'origin/CSS-Dev'
Add groupPower modifier for loss and resource.
Remove robot from robot lists
Add test for previous changes
Merge branch 'master' into Model-dev
finished relationship between res and building
Merge branch 'master' of https://github.com/CodeMonkeyism/CMPT350
erw
deal with confilct
Merge remote-tracking branch 'origin/CSS-Dev'
uncompleted increase and decrease show
121
finished color set
Explore now return a progress bar.
Merge branch 'Model-dev'
Remove unneeded code