fix problem for BS3 modal

If you add input in modal datepicker show under modal shadow layer.
Set 'appendTo' for fix this problem, eg.:
<pre>
$('.datepicker-input').datepicker({
	appendTO: "div.modal"
});
</pre>
Removed blank space before the previous button when calendarWeeks is true;
Fixed calendar-weeks.js test;
z-index calculation should not stop at first element

i guess that when calculating proper z-index for the datepicker, we should find the max z-index value of parents() and not stop at first

related to #533 #170 #683 #678 #656 #665 #634 #621 #609
indent formating
indent formating
oops forgot one line
fixing the ui displaying 'undefined nan' when typing dates in firefox
Removed comment from compiled CSS.

Block comments are passed through into the compiled CSS, while line
comments are not. It seems appropriate to not pass commented styles
into the compiled CSS.

Conflicts:
	css/datepicker.css
Removed unused .dow styles.
Fix colspan if calendarWeeks & clearBtn are true

When calendarWeeks and clearBtn are true at the same time, the th arround the clearbutton has the wrong colspan.
pulled in latest master branch
Merge branch 'master' of https://github.com/eternicode/bootstrap-datepicker
added cs clear translation
Update bootstrap-datepicker.cs.js

Added the weekStart and date format.
Added case-neutral matching for text months
Merge remote-tracking branch 'prespic/patch-1'
Update bootstrap-datepicker.nl.js

Added some properties.
Reset tooltip fixes #749
https://github.com/eternicode/bootstrap-datepicker/issues/775