Dispatcher: use sections (#6364)

use `device` `filemanager` `rolling` and `paging` sections to organize the
dispatcher menu and allow the user to know when the action will apply

add events from ReaderGesture

allow profiles in FM

frontend/apps/reader/modules/readerfont.lua

@@ -321,6 +321,7 @@ function ReaderFont:addToMainMenu(menu_items)
 end
 
 function ReaderFont:gesToFontSize(ges)
+    if type(ges) ~= "table" then return ges end
     if ges.distance == nil then
         ges.distance = 1
     end