Simplify search bar and menu

The option "contents" has been removed from the search bar. This field
is not intended to be used alone, but rather in conjunction with other
fields. Otherwise it may be really slow on large databases.

The "name" option has been removed from the search menu. This doesn't
provide anything better over the "Names" field, that search more
fields, including item names.

modules/webapp/src/main/elm/Data/Icons.elm

@@ -21,6 +21,8 @@ module Data.Icons exposing
     , organizationIcon
     , person
     , personIcon
+    , search
+    , searchIcon
     , tag
     , tagIcon
     , tags
@@ -31,6 +33,16 @@ import Html exposing (Html, i)
 import Html.Attributes exposing (class)
 
 
+search : String
+search =
+    "search icon"
+
+
+searchIcon : String -> Html msg
+searchIcon classes =
+    i [ class (search ++ " " ++ classes) ] []
+
+
 folder : String
 folder =
     "folder outline icon"