Handle spaces in tags

The tag-it library is now configured to allow spaces.
However by default the window.open() function converts
the space characters in the query part of the uri to +
The streamsearch controller is now handling this conversion too.

Fixes #1254

h/js/directives.coffee

@@ -271,6 +271,7 @@ tags = ['$window', ($window) ->
       caseSensitive: false
       placeholderText: attr.placeholder
       keepPlaceholder: true
+      allowSpaces: true
       preprocessTag: (val) ->
         val.replace /[^a-zA-Z0-9\-\_\s]/g, ''
       afterTagAdded: (evt, ui) ->

h/js/streamsearch.coffee

@@ -177,7 +177,12 @@ class StreamSearch
       a_upd.getTime() - b_upd.getTime()
 
     # Read search params
-    $scope.query = $location.search()
+    search =  $location.search()
+    for k,v of search
+      if '+' in v
+        search[k] = v.replace /\+/g, ' '
+
+    $scope.query = search
     $scope.searchFacets = SEARCH_FACETS
     $scope.searchValues = SEARCH_VALUES