fix incorrect computation of starting day

if first day of week was set to monday, events starting at sunday displayed incorrectly in week view
Create en-US.js

Optional English, US translation to provide "proper" titles
Remove useless lines
Merge pull request #1 from mlocati/patch-1

Remove useless lines
Merge pull request #59 from izar-cz/patch-1

fix incorrect computation of starting day
Update calendar.js for more "proper" English
Delete en-US.js
Add Swedish localization
greek translation
a small fix on the language key ('el-EL')
Merge pull request #64 from andreas-trad/master

greek translation
Merge pull request #63 from ingemar/master

Add Swedish localization
Merge pull request #60 from chrisjohnson00/master

Update calendar.js to use "proper" english as the default text
Bootstrap update
- add - option to cache loaded templates or not. Basicaly for disabling cashe during developemtn.
Fix tooltip issue #62
GH for MAC strange behavior
Merge branch 'master' of https://github.com/Serhioromano/bootstrap-calendar
No idea why
Restore lost changes

I do not know why but I had very seriose conflict when try to push some
changes through GitHub for MAC. I spent sometime to make it through but
since I am not git expert it happen that last to PR merges was lost. I
restore it manually.