DOCX Input: Fix a regression that broke conversion of documents with an index that contains fields with special page text. Fixes #1322637 [Private bug](https://bugs.launchpad.net/calibre/+bug/1322637)
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Start work on migrating to transifex. See https://srctwig.com/2012/08/02/localisation-with-git-and-transifex/ for a nice summary of workflow using the command line tool
Port sdist to use the new translations layout
Create Transifex resources
Port the building of translations
Move get_translations over to Transifex
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Track translations in their own reporsitory
Virtual Libraries: If the user selects a virtual library whose tab has been closed via the Virtual Library button, re-open the tab instead of displaying the virtual library in the All Books tab. Fixes #1322474 [Closing a Virtual Library Tab Flags It As Hidden](https://bugs.launchpad.net/calibre/+bug/1322474)
Check Book: When reporting unmanifested file warnings, allow auto fixing by adding the file to the manifest if it is referenced elsewhere or removing the file if it is not. Fixes #1323362 [Automatic fix does not work for "file is not listed in the book manifest."](https://bugs.launchpad.net/calibre/+bug/1323362)
Updated index.py to handle no link case
Merge branch 'master' of https://github.com/pgarst/calibre
Start work on custom theme support for the editor
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