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/SourceTable.elm

@@ -4,14 +4,18 @@ module Comp.SourceTable exposing
     , isEdit
     , update
     , view
+    , view2
     )
 
 import Api.Model.SourceAndTags exposing (SourceAndTags)
+import Comp.Basic as B
 import Data.Flags exposing (Flags)
 import Data.Priority
 import Html exposing (..)
 import Html.Attributes exposing (..)
 import Html.Events exposing (onClick)
+import Styles as S
+import Util.Html
 
 
 type SelectMode
@@ -48,6 +52,10 @@ update _ msg =
             ( Cmd.none, Display source )
 
 
+
+--- View
+
+
 view : List SourceAndTags -> Html Msg
 view sources =
     table [ class "ui table" ]
@@ -115,3 +123,63 @@ renderSourceLine source =
             [ text source.source.id
             ]
         ]
+
+
+
+--- View2
+
+
+view2 : List SourceAndTags -> Html Msg
+view2 sources =
+    table [ class S.tableMain ]
+        [ thead []
+            [ tr []
+                [ th [ class "" ] []
+                , th [ class "text-left" ] [ text "Abbrev" ]
+                , th [ class "px-2 text-center" ] [ text "Enabled" ]
+                , th [ class "hidden md:table-cell" ] [ text "Counter" ]
+                , th [ class "hidden md:table-cell" ] [ text "Priority" ]
+                , th [ class "hidden sm:table-cell" ] [ text "Id" ]
+                ]
+            ]
+        , tbody []
+            (List.map renderSourceLine2 sources)
+        ]
+
+
+renderSourceLine2 : SourceAndTags -> Html Msg
+renderSourceLine2 source =
+    tr
+        [ class S.tableRow ]
+        [ td [ class S.editLinkTableCellStyle ]
+            [ div
+                [ class "inline-flex space-x-2"
+                ]
+                [ B.editLinkLabel (Select source)
+                , B.linkLabel
+                    { label = "Show"
+                    , icon = "fa fa-eye"
+                    , handler = Show source
+                    , disabled = not source.source.enabled
+                    }
+                ]
+            ]
+        , td [ class "text-left" ]
+            [ text source.source.abbrev
+            ]
+        , td [ class "w-px px-2 text-center" ]
+            [ Util.Html.checkbox2 source.source.enabled
+            ]
+        , td [ class "text-center hidden md:table-cell" ]
+            [ source.source.counter |> String.fromInt |> text
+            ]
+        , td [ class "text-center hidden md:table-cell" ]
+            [ Data.Priority.fromString source.source.priority
+                |> Maybe.map Data.Priority.toName
+                |> Maybe.withDefault source.source.priority
+                |> text
+            ]
+        , td [ class "text-center hidden sm:table-cell" ]
+            [ text source.source.id
+            ]
+        ]