Fix #1388481 [Little typo](https://bugs.launchpad.net/calibre/+bug/1388481)
Fix #1388479 [Little typo](https://bugs.launchpad.net/calibre/+bug/1388479)
Fix #1388462 [Little typo?](https://bugs.launchpad.net/calibre/+bug/1388462)
Fix #1388459 [Little typo? (semantics)](https://bugs.launchpad.net/calibre/+bug/1388459)
User manual: translate page number references in the PDF output
Edit metadata dialog: Allow right clicking on buttons with popup menus to popup the menu
Conversion: Handle input documents with crazy font sizes (1000pt +)
Fix #1388508 [Little typo](https://bugs.launchpad.net/calibre/+bug/1388508)
Fix #1388510 [Little typo](https://bugs.launchpad.net/calibre/+bug/1388510)
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