bugfix: check renderpg hash before hinting page
add render mode to hint page
add render_mode into render hash
Merge pull request #691 from chrox/new_ui_code

bugfix: check renderpg hash before hinting page
Merge branch 'new_ui_code' of github.com:hwhw/kindlepdfviewer into hint_page_fix

Conflicts:
	frontend/document/document.lua
Merge pull request #690 from houqp/new_ui_houqp

font size, line space, font weight, font gamma and viewmode support for crengine
Merge branch 'new_ui_code' into hint_page_fix

Conflicts:
	frontend/ui/reader/readerview.lua
Merge pull request #694 from houqp/hint_page_fix

add render mode to hint page