add FIELD?=GLOB to git-annex view usage

And also to vadd usage.

Also added some other things to the usage that were omitted before to
save space.

Adding even FIELD?=GLOB made the git-annex --help list of commands grow
too wide for an 80 column display. So, removed the description of
parameters from that list of commands.

Sponsored-By: Brock Spratlen on Patreon

Command/View.hs

@@ -78,7 +78,7 @@ perform view = do
 	next $ checkoutViewBranch view applyView
 
 paramView :: String
-paramView = paramRepeating "FIELD=VALUE"
+paramView = paramRepeating "TAG FIELD=GLOB ?TAG FIELD?=GLOB FIELD!=VALUE"
 
 mkView :: [String] -> Annex View
 mkView ps = go =<< inRepo Git.Branch.current