Move page popup resources to separate directory

Move page popup resources to separate directory
https://bugs.webkit.org/show_bug.cgi?id=93932

Reviewed by Kent Tamura.

.:

* ManualTests/forms/calendar-picker.html:
* ManualTests/forms/color-suggestion-picker.html:

Source/WebCore:

Keeping the resources organized.

No new tests.

* Resources/pagepopups/calendarPicker.css: Renamed from Source/WebCore/Resources/calendarPicker.css.
* Resources/pagepopups/calendarPicker.js: Renamed from Source/WebCore/Resources/calendarPicker.js.
* Resources/pagepopups/calendarPickerMac.css: Renamed from Source/WebCore/Resources/calendarPickerMac.css.
* Resources/pagepopups/colorSuggestionPicker.css: Renamed from Source/WebCore/Resources/colorSuggestionPicker.css.
* Resources/pagepopups/colorSuggestionPicker.js: Renamed from Source/WebCore/Resources/colorSuggestionPicker.js.
* WebCore.gyp/WebCore.gyp:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@125523 268f45cc-cd09-0410-ab3c-d52691b4dbfc