First version of new ui based on tailwind

This drops fomantic-ui as css toolkit and introduces tailwindcss. With
tailwind there are no predefined components, but it's very easy to
create those. So customizing the look&feel is much simpler, most of
the time no additional css is needed.

This requires a complete rewrite of the markup + styles. Luckily all
logic can be kept as is. The now old ui is not removed, it is still
available by using a request header `Docspell-Ui` with a value of `1`
for the old ui and `2` for the new ui.

Another addition is "dev mode", where docspell serves assets with a
no-cache header, to disable browser caching. This makes developing a
lot easier.

modules/webapp/src/main/elm/Comp/EquipmentTable.elm

@@ -4,13 +4,16 @@ module Comp.EquipmentTable exposing
     , emptyModel
     , update
     , view
+    , view2
     )
 
 import Api.Model.Equipment exposing (Equipment)
+import Comp.Basic as B
 import Data.Flags exposing (Flags)
 import Html exposing (..)
 import Html.Attributes exposing (..)
 import Html.Events exposing (onClick)
+import Styles as S
 
 
 type alias Model =
@@ -78,3 +81,34 @@ renderEquipmentLine model equip =
             [ text equip.name
             ]
         ]
+
+
+
+--- View2
+
+
+view2 : Model -> Html Msg
+view2 model =
+    table [ class S.tableMain ]
+        [ thead []
+            [ tr []
+                [ th [ class "" ] []
+                , th [ class "text-left" ] [ text "Name" ]
+                ]
+            ]
+        , tbody []
+            (List.map (renderEquipmentLine2 model) model.equips)
+        ]
+
+
+renderEquipmentLine2 : Model -> Equipment -> Html Msg
+renderEquipmentLine2 model equip =
+    tr
+        [ classList [ ( "active", model.selected == Just equip ) ]
+        , class S.tableRow
+        ]
+        [ B.editLinkTableCell (Select equip)
+        , td [ class "text-left" ]
+            [ text equip.name
+            ]
+        ]