webapp: Improve UI around remote that have no annex.uuid set, either because setup of them is incomplete, or because the remote git repository is not a git-annex repository.

Complicated by such repositories potentially being repos that should have
an annex.uuid, but it failed to be gotten, perhaps due to the past ssh repo
setup bugs. This is handled now by an Upgrade Repository button.

Git/Remote.hs

@@ -11,6 +11,7 @@ module Git.Remote where
 
 import Common
 import Git
+import Git.Types
 import qualified Git.Command
 import qualified Git.BuildVersion
 
@@ -21,8 +22,6 @@ import Network.URI
 import Git.FilePath
 #endif
 
-type RemoteName = String
-
 {- Construct a legal git remote name out of an arbitrary input string.
  -
  - There seems to be no formal definition of this in the git source,
@@ -62,6 +61,10 @@ remoteLocationIsUrl :: RemoteLocation -> Bool
 remoteLocationIsUrl (RemoteUrl _) = True
 remoteLocationIsUrl _ = False
 
+remoteLocationIsSshUrl :: RemoteLocation -> Bool
+remoteLocationIsSshUrl (RemoteUrl u) = "ssh://" `isPrefixOf` u
+remoteLocationIsSshUrl _ = False
+
 {- Determines if a given remote location is an url, or a local
  - path. Takes the repository's insteadOf configuration into account. -}
 parseRemoteLocation :: String -> Repo -> RemoteLocation