fix(modal): backdrop should cover previously opened modals

Closes #922
Closes #931
chore(angular): update AngularJS to 1.0.8
feat(modal): expose $close and $dismiss options on modal's scope

Closes #966
fix(modal): allow replacing object with default options

Closes #967
chore(release): v0.6.0
chore(release): Starting v0.7.0-SNAPSHOT
fix(tooltip): restore html-unsafe compatibility with AngularJS 1.2
fix(modal): correctly close modals with no backdrop

backdropDomEl was not initialised if only modal without backdrop was opened.

Closes #974
Closes #979
refactor(pagination): change the way `num-pages` is assigned

Closes #976
refactor(rating): compatibility with AngularJS 1.2
style(buttons): cleanup button formatting

Normalize spacing issues
docs(modal): add `template` parameter to documentation

Closes #1026
refactor(tabs): remove unused dependency injections

Closes #1009
fix(typeahead): do not set editable error when input is empty

Closes #1038
fix(accordion): assign `is-open` to correct scope

Closes #1034
fix(typeahead): remove popup flickering

Closes #1011
feat(datepicker): add i18n support for bar buttons in popup

Closes #777
fix(typeahead): don't show matches if an element is not focused

Closes #964
chore(demo): fix custom build link

Closes #1054
style(all): remove unneccessary px declarations from values set to 0