fix(dropdown): unbind toggle element event on scope destroy

Also, change the way disabled dropdownToggle is read from `attrs` instead of element property.

Closes #1867
Closes #1870

Add an optionnal parameter on timepicker object in order to control the visibility of the controls arrows.

chore(tests): Add unit tests for arrows control visibility

Fixing demo semi colon issue.

chore(release): Add unit tests

chore(timepicker): Add LOC to check the user's input

chore(timepicker): Remove  method for showArrowControls option

chore(timepicker): Remove Show / Hide option from demo

chore(timepicker): Hides <tr> element rather than <td> element.

chore(tests): Simplify arrows control visibility tests

chore(tests): Refactoring arrow visibility tests

fix(dropdown): unbind toggle element event on scope destroy

Also, change the way disabled dropdownToggle is read from `attrs` instead of element property.

Closes #1867
Closes #1870

Add an optionnal parameter on timepicker object in order to control the visibility of the controls arrows.

chore(tests): Add unit tests for arrows control visibility

Fixing demo semi colon issue.

chore(release): Add unit tests

chore(timepicker): Add LOC to check the user's input

chore(timepicker): Remove  method for showArrowControls option

chore(timepicker): Remove Show / Hide option from demo

chore(timepicker): Hides <tr> element rather than <td> element.

chore(tests): Simplify arrows control visibility tests

chore(tests): Refactoring arrow visibility tests

refactor(rating): use `track by` in template

Closes #1724

refactor(pagination): add `href` and `track by` in templates

Closes #1725

fix(progressbar): allow fractional values for bar width

 * Fractions are limited to two decimals, and are not included in aria values.

Closes #1761

fix(dropdown): use $animate for adding and removing classes

Closes #1644

feat(datepicker): add `datepicker-mode`, `init-date` & today hint

 * Add two-way binded `datepicker-mode`.
 * Add optional `init-date` when no model value is specified.
 * Add hint for current date.
 * Use isolated scope for popup directive.
 * Use optional binding for `isOpen`.
 * Split each mode into it's own directive.

Closes #1599

BREAKING CHANGE:
`show-weeks` is no longer a watched attribute
`*-format` attributes have been renamed to `format-*`
`min` attribute has been renamed to `min-date`
`max` attribute has been renamed to `max-date`

refactor(rating): evaluate attributes inside init function

Closes #1590
Closes #1768

refactor(pagination): remove unused watch

Closes #1769

fix(typeahead): correctly higlight numeric matches

Fixes #1777

refactor(typeahead): use `ng-if` and `track by` in template

Closes #1722

demo(typeahead): correct demo for asyn results

Fixes #1740

refactor(datepicker): track buttons by date instead of $index

refactor(pagination): move boundary & directions to the template

Closes #795
Closes #1770

feat(alert): add WAI-ARIA markup

Closes #1806

chore(demo): fix fork button width

Closes #1805

fix(datepicker): `Today` button should not set time

Fixes #1726
Closes #1808

fix(progressbar): number filter in bar template and only for percent

Closes #1807

refactor(dropdown): remove isolated scope

Closes #1818

feat(typeahead): add WAI-ARIA markup

Closes #1814

refactor(accordion): transclude function in compile is deprecated.

Closes #1789

refactor(carousel): use `track by` in template

Closes #1723

fix(datepicker): mark input field as invalid if the date is invalid

Closes #1845

Conflicts:
	src/datepicker/datepicker.js
	src/datepicker/test/datepicker.spec.js