Add Swedish (SV-se) language support

[pixelthing]

Hi - thanks for a really nice little date range picker. Here's the Swedish localisation (I'm from the UK, but living in Sweden).

I'll also have a go at making it mobile friendly - so maybe another pull request soon!

[danielheddelin]

"måned" is spelled "månad" and a cpl minor errors. This is probably a better swedish language definition:
se: {
selected: 'Val:',
day: 'dag',
days: 'dagar',
apply: 'godkänn',
'week-1': 'må',
'week-2': 'ti',
'week-3': 'on',
'week-4': 'to',
'week-5': 'fr',
'week-6': 'lö',
'week-7': 'sö',
'month-name': ['januari', 'februari', 'mars', 'april', 'maj', 'juni', 'juli', 'augusti', 'september', 'oktober', 'november', 'december'],
shortcuts: 'snabbval',
'custom-values': 'Anpassade värden',
past: 'över',
following: 'följande',
previous: 'föregående',
'prev-week': 'vecka',
'prev-month': 'månad',
'prev-year': 'år',
next: 'nästa',
'next-week': 'vecka',
'next-month': 'månad',
'next-year': 'år',
'less-than': 'Datumintervall bör inte vara mindre än %d dagar',
'more-than': 'Datumintervall bör inte vara mer än %d dagar',
'default-more': 'Välj ett datumintervall längre än %d dagar',
'default-single': 'Välj ett datum',
'default-less': 'Välj ett datumintervall mindre än %d dagar',
'default-range': 'Välj ett datumintervall mellan %d och %d dagar',
'default-default': 'Välj ett datumintervall',
time: 'tid',
hour: 'timma',
minute: 'minut'
}
And besides - I can't find any documentation on how to implement a custom language definition?

[holtkamp]

Thanks for the feedback, can you provide a pull-request?

I can't find any documentation on how to implement a custom language definition?

We tried to separate the language files, but without succeeding. Not sure whether injecting your own language definitions is currently possible.

#333
#336