Kindle APNX: Add calculation using pagebreak tag.
fix equality.
fix indentation.
fix fiding pagebreak tags.
page apnx algorithm to search for all tags with pagebreak in them.
Put in some more fallbacks for when a chosen parser failes.
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Update Qt build notes for Qt 5
Edit Book: When editing a book in a language for which no dictionary is installed, consider all words to be correctly spelt, rather than misspelt. Fixes #1320829 [Edit book very slow](https://bugs.launchpad.net/calibre/+bug/1320829)
Add note about diplay of line number next to tag name
Finish up QT 5 build instructions on windows
Live CSS: Dont make the heading fonts larger than the rest of the text
Live CSS: Indicate which CSS properties are overriden by higher priority rules
config widget changes to support combo box.
Live CSS: Tighten the line spacing between properties
Use the C tokenizer for tinycss
Convert old accurate bool setting to new string method.
Refactor editor theme management
Kindle driver: When generating page numbers automatically, add an additional method to detect page boundaries, using the presence of <mbp:pagebreak> tags in the source of the book. You can use this setting by cright clicking on the Kindle icon in calibre when the kindle is connected and choosing customize this device. Fixes #1321761 [Code Submission: Real Page numbers modification](https://bugs.launchpad.net/calibre/+bug/1321761)

Merge branch 'master' of https://github.com/user-none/calibre