fix(timepicker): use html5 for input elements
fix(pagination): handle extreme values for `total-items`

Closes #1104
docs(README): add build instructions for explicit modules
fix(datapicker): some IE8 compatibility improvements
feat(datepicker): datepicker-append-to-body attribute

Attribute / option specifies where in the DOM to place the datepicker
popup elements.

If this option evaluates to 'true', the datepicker popup elements are
appended to 'body'. Otherwise, they follow the directive element.
fix(typeahead): fix loading callback when deleting characters

Closes #1140
fix(tooltip): hide tooltips when content becomes empty

Closes #875
feat(tooltip): add ability to enable / disable tooltip
fix(datapicker): set popup initial position in append-to-body case

Set the initial position offsets of the datepicker popup element in case of appended to 'body'.

Todo: refresh the position on parent elements resize.
feat(dropdownToggle): disable dropdown when it has the disabled class