Update to version 1.1.0

Changelog:

• Added support for new hidden preferences in Claws Mail 3.15.0 'tags_color', 'tags_bgcolor', 'qs_active_color', 'qs_active_bgcolor', 'qs_error_color', 'qs_error_bgcolor', 'default_header_color', 'default_header_bgcolor', and 'warn_sending_many_recipients_num'.
• Added new hotkeys tab for editing keyboard accelerators available in the 'menurc' file of Claws Mail
• Fixed bug 3735 'the number of accounts may make main window very tall'
• Improved internal versions handling and other minor refactorings
• Updated manual page
• Translations: Updated: French, Dutch, Swedish, Turkish, Danish, Brazilian Portuguese, Catalan, Norwegian Bokmal and Spanish