change flavors api to handle different actions
properly handle gets on flavors
handle creates
implement flavor deletion and improve create
no need to register actions
display network up/down correctly
add comments and fix template
use schema to unpack itself
create api shim for updating instance
set instance ask price and update instance start time
better comment
final bugfixes to make refactoring work
remove unnecessary method
fix flavor matching
add initial settings for new flavors
only update flavors when there is change
remove unnecessary flavor methods
reduce flavors templates to one
adapt instance handler to new schema

the instance schema has been split into instance and appliance schemes.
this adapts the InstanceDetailHandler to be able to deal with the two
separate schemas
fix creation of merge flavors