l10n fixes
Summary:
Fixing menu items, strings with a box and Capitalization
Add "@title:window" marker; format and identation fixes
Replace EXIF and exif occurrences to Exif
Reviewers: KPhotoAlbum, pino
Reviewed By: pino
Subscribers: johanneszarl, tleupold, pino
Differential Revision: https://phabricator.kde.org/D14932