remove trailing spaces
remove screen rotation in readermenu
add dbg in wtest.lua
Merge pull request #793 from houqp/new_ui_houqp

minor fixes
Merge pull request #792 from chrox/new_ui_code

bugfix: require button widget
bugfix: fix loop scrolling in shorter pages
Merge pull request #794 from chrox/scroll_fix

bugfix: fix loop scrolling in shorter pages
bugfix: fix loop scrolling at the beginning/end of the document