test(typeahead): corrects typos

Closes #1209
refactor(alert): clean-up unused variables
docs(README): add info about templates customization
docs(README): fix markup
fix(typeahead): prevent accidental form submission on ENTER
fix(datepicker): properly handle showWeeks config option

Closes #1132
docs(modal): fix double "a" typo

Closes #1214
fix(position): correct positioning for SVG elements

Bootstrap tooltips calculate the `width` and `height` of elements
using first getBoundingClientRect and fall back to `offsetWidth` and
`offsetHeight` if it is not available:

https://github.com/twbs/bootstrap/blob/master/js/tooltip.js#L297

This fixes a problem with tooltips/popovers on SVG elements in
Firefox: https://github.com/twbs/bootstrap/issues/5956

This change mimics that behavior.

Closes #1225
fix(typeahead): evaluate matches source against a correct scope

Closes #1238
fix(collapse): remove element height watching

For unclear reasons the directive was watching DOM element's height
which incurs performance penalty. Normally this watching shouldn't be
necessery as collapsible elements should get height: auto;

Closes #1222
fix(collapse): add the "in" class for expanded panels

Closes #1192
feat(modal): added bootstrap3 support
feat(transition): emulateTransitionEnd implementation

This is used by TWBS to provide support for browsers which do not have
transition support, despite theoretically providing it.