provide buffer time for detecting flow_delete
spinner will show up while reloading & actions inputed may contain spaces
webui won't do anything with data which user inputed.

Attention!! All the policies & dependencies about fields of flows should be
handled in the adapter respectively, not in the webui. If the adapter has not
been rewritten, please do not use this.
Use Barrier Message to ensure switch finish processing FLOW_DELETE
to prevent from getting remove msg too late,lead to return wrong msg
Merge branch 'dev' into timesleep
update UI
Merge remote-tracking branch 'upstream/dev' into dumbUI

Conflicts:
	webui/js/flowmod.js
some tiny changes about UI

- remove the presence of "wildcards"
- adjust the order of fields in form
- when modifying or deleting a flow, the color which created by flow hilighting
will be removed
- every fields have their own default value, except "actions"
update UI for some tiny changes
actions field "undefined" bug fixed

avoid modifying original "flows" object
Merge remote-tracking branch 'starbops/dumbUI' into fladapter
Analyze Wildcards to remove unmeaningful parameters
Merge remote-tracking branch 'origin/dev' into timesleep
- "mod" & "del" has no default value
- send src & dst IP with CIDR format
Merge remote-tracking branch 'starbops/dumbUI' into fladapter
use barrier msg and add timeout
Merge branch 'timesleep' into fladapter
add "vlanP" for vlan priority
add 'vlanP' for vlan priority
Merge remote-tracking branch 'starbops/dumbUI' into fladapter