fix Dates exports for hledger-web

hledger-lib/Hledger/Data/Dates.hs

@@ -43,6 +43,7 @@ module Hledger.Data.Dates (
   splitSpan,
   fixSmartDate,
   fixSmartDateStr,
+  fixSmartDateStrEither,
   fixSmartDateStrEither',
   daysInSpan,
   maybePeriod,

hledger-web/Hledger/Web/Handlers.hs

@@ -58,7 +58,7 @@ import Text.Printf
 import Yesod.Core
 -- import Yesod.Json
 
-import Hledger hiding (today,subs,is,d)
+import Hledger
 import Hledger.Cli hiding (version)
 import Hledger.Web.Foundation
 import Hledger.Web.Options