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Dump docx files with prettified xml
Add highlighting the header of the column containing the current cell
Merge from trunk
Change the name of the column highlight tweak to make it more representative
Add a tweak that permits setting a style sheet for the selected cell.
Speed up docx parsing by caching xpaths
pep8
Performance improvement in quickview when switching books
Use bold italic font in headers to indicate current selected cell
Book List: Make the column and row headers for the current cell bold
Merge from trunk
Remove header changes from model
Remove calls to model when selected text changes
Add italic to the bolded header cell
Book list: Indicate the current cell with a dotted rectangle rather than the harder to see underline
Remove cell highlighting tweak
Fully revert default_tweaks
Make the calibre item view focus settable from python
Use bold and italic for current cell highlighting. Also improve quickview window performance