Initial work on implementing aday's new yelp designs
yelp-window: Fix the button's icons in RTL
yelp-window: Center-align the buttons in the header bar
Hooked up actions for previous and next page
Hooked up printing
Hooked up actions for new window and close window
Added keybinding to show text cursor
Added actions for larger and smaller text
Make prev/next buttons for find in page work
Fixed up the bookmarks popover a bit
yelp-window: Improvements to buttons and search bar
Removed read later
yelp-help-list: Fix double unref
Fix reference to old, unused struct member
yelp-window: Added "All Help" menu item
Merge branch 'master' into new-aday-design

Conflicts:
	src/yelp-window.c
Move some actions to the app menu
yelp-window: Use placeholder text on empty bookmarks list
yelp-window: Added back Ctrl+L, better key press handling for search
yelp-window: Don't show find bar when search bar is shown