add date slider for street level photos, and more (#10394)

full list of enhancements:

* year slider to filter photos by freshness
* toggle active streetlevel layers with shortcut `shift+P`
* hfov, pitch and direction is now held between sequences and images as asked in #10392
* fix for #10361 (only panoramax)
* added tests and jsdoc
* add ticks for existing photos on slider
* general bug fixes
* rudimentary support for toDate in date slider (only when iD is started with a "to" date in the hash parameter: show a second slider to visualize and set the "to" date)

---------

Co-authored-by: Martin Raifer <martin@raifer.tech>

data/core.yaml

@@ -905,6 +905,11 @@ en:
     username_filter:
       title: "Username"
       tooltip: "Show only photos by this user"
+    age_slider_filter:
+      title: "Date Range"
+      tooltip: "Shows only photos that are newer than the selected date"
+      label_all: "All photos visible."
+      label_date: "Showing photos newer than {date}."
   feature:
     points:
       description: Points
@@ -2418,6 +2423,8 @@ en:
       way_selected:
         title: "With way selected"
         child: "Select child nodes"
+      enable:
+        streetlevel: "Toggle active street level photo layers"
     editing:
       title: "Editing"
       drawing:

data/shortcuts.json

@@ -74,6 +74,11 @@
             "shortcuts": ["area_fill.wireframe.key"],
             "text": "shortcuts.browsing.display_options.osm_data"
           },
+          {
+            "modifiers": ["⇧"],
+            "shortcuts": ["P"],
+            "text": "shortcuts.browsing.enable.streetlevel"
+          },
           {
             "shortcuts": ["background.minimap.key"],
             "text": "shortcuts.browsing.display_options.minimap"