Edit book: Fix importing of Lithuanian dictionary from OpenOffice, that does not specify a country code. Fixes #1313315 [Lithuanian spell check dictionary from OpenOffice gives an error](https://bugs.launchpad.net/calibre/+bug/1313315)
Edit book: Fix saved search dialog causing high CPU usage
pep8
pep8
News download: Fix very long URLs for links to pages causing errors on windows because of max path length restrictions. Fixes #1313982 [Fetch failed from New York Times](https://bugs.launchpad.net/calibre/+bug/1313982)
Make the mem leak test for unrar more robust
ICU 53 no longer return the same collation order for numbers whose value is different even if they have the same first digit.
Edit book: Fix a hang when editing an HTML or XML file with text of the form <abc: (i.e. a tag name with a trailing colon). Fixes #1314009 [Editor: wrongly placed colon causes hang](https://bugs.launchpad.net/calibre/+bug/1314009)
Edit Book: Fix an error when merging CSS stylesheets that contain @charset rules
Fix #1313567 [Editor save button greyed out  after failed save](https://bugs.launchpad.net/calibre/+bug/1313567)
Port compiling of .ui forms
Port imports
Port build script for building PyQt extensions to PyQt5
Port the progress indicator extension to PyQt5
Allow controlling PyQt5 import path via the env var PYQT5_IMPORT_PATH
faster builds
Get rid of the PyQt4 string from everywhere
Port: setMargin() reset() QStringList()

setMargin(): QLayout no longer has a setMargin() function, replace with
setContentsMargins()

reset(): QAbstractListModel no longer has reset(), replace with
beginResetModel(), endResetModel()

QStringList: No longer exists, a simply python list of strings works
instead
Fix mouse wheel not working in diff view
Port coffeescript compiler