Various minor fixes (#4172)

- css tweaks: use correct CSS "hyphens:" instead of "hyphenate:"
- screenshoter: more logical order of lines (no change in what it does)
- textviewer: make diagonal swipe really trigger a full refresh
- textwidget: more adequate text length to help with centering
- toggleswitch: fix sizing & centering with correct calculations
  (this reduces a bit the size of switches, and may cause a new
  truncation in some translations)

frontend/ui/widget/screenshoter.lua

@@ -38,8 +38,9 @@ end
 
 function Screenshoter:onScreenshot(filename)
     local screenshot_name = filename or os.date(self.screenshot_fn_fmt)
+    Screen:shot(screenshot_name)
     local widget = ConfirmBox:new{
-        text = T( _("Saving screenshot to %1.\nWould you like to set it as screensaver?"), screenshot_name),
+        text = T( _("Saved screenshot to %1.\nWould you like to set it as screensaver?"), screenshot_name),
         ok_text = _("Yes"),
         ok_callback = function()
             G_reader_settings:saveSetting("screensaver_type", "image_file")
@@ -48,7 +49,6 @@ function Screenshoter:onScreenshot(filename)
         cancel_text = _("No"),
     }
     UIManager:show(widget)
-    Screen:shot(screenshot_name)
     -- trigger full refresh
     UIManager:setDirty(nil, "full")
     return true