Add information on fixed price costs to pool launch and spot price
history pages
Add note about times being in GMT
Add scale up and down views and forms
Add scale up routines
Fix bug in detection of whether a spot instance is assigned
Update kwargs sent to pool details template
Log scale up steps
Add scale up and down buttons to pool details
Fix instance spot request display
Merge remote-tracking branch 'origin/feature-poolscale' into
feature-poolscale

Conflicts:
	cloud_copasi/web_interface/pools/pool_views.py
	cloud_copasi/web_interface/templates/pool/ec2_pool_scale_up.html