remove manager postfixes

inc/screen/screen.home.lua

@@ -1,4 +1,4 @@
-ScreenManager.register({
+Screen.register({
   id = "home",
   name = "Home",
   decisions = {

inc/screen/screen.manager.lua

@@ -1,6 +1,6 @@
 local _screens = {}
 
-function ScreenManager.get_screens_array()
+function Screen.get_screens_array()
   local screens_array = {}
   for _, screen_data in pairs(_screens) do
     table.insert(screens_array, screen_data)
@@ -8,13 +8,13 @@ function ScreenManager.get_screens_array()
   return screens_array
 end
 
-function ScreenManager.register(screen_data)
+function Screen.register(screen_data)
   if _screens[screen_data.id] then
     trace("Warning: Overwriting screen with id: " .. screen_data.id)
   end
   _screens[screen_data.id] = screen_data
 end
 
-function ScreenManager.get_by_id(screen_id)
+function Screen.get_by_id(screen_id)
   return _screens[screen_id]
 end

inc/screen/screen.office.lua

@@ -1,4 +1,4 @@
-ScreenManager.register({
+Screen.register({
   id = "office",
   name = "Office",
   decisions = {

inc/screen/screen.toilet.lua

@@ -1,4 +1,4 @@
-ScreenManager.register({
+Screen.register({
   id = "toilet",
   name = "Toilet",
   decisions = {

inc/screen/screen.walking_to_home.lua

@@ -1,4 +1,4 @@
-ScreenManager.register({
+Screen.register({
   id = "walking_to_home",
   name = "Walking to home",
   decisions = {

inc/screen/screen.walking_to_office.lua

@@ -1,4 +1,4 @@
-ScreenManager.register({
+Screen.register({
   id = "walking_to_office",
   name = "Walking to office",
   decisions = {