feat(toolbar): add button to hide/show toolbar

menu.jade:
* Add toggle button to toolbar
* Add container to hide the rest of toolbar without hiding the toggle
button.

menu.styl:
* Add toggle button styles
* Update toolbar styles to account for toggle button

header.styl:
* Update rules for adding and removing padding from .header-wrap when
toolbar is toggled.
Merge pull request #3402 from benmanley/toolbar-toggle

feat(toolbar): add button to hide/show toolbar
fix(mobile): export i18n for mobile so it can temporarily use en translations
fix(profile): fix profile classes for mobile include
feat(stats): expos stats jade files to mobile
feat(filters): add button to hide tags and restyle

**filters.styl**
* restyle tags and filter controls using global styles
**filter.jade**
* add button to toggle visibility
* change controls from icons to text
**global-modules**
* add new extends and mixins for button bar and tags
**global-colors.styl**
* add tag colours
refactor(tasks): restyle task column color scheme
fix(shared): use develop branch
adding flag, allowing free rebirth purchase, adding modal
fix(i18n): default tasks checklists
Merge pull request #3449 from deilann/removingthelevelcap

Removing level cap, free rebirth at 100
fix(i18n): use everywhere i18n.getUserLanguage middleware
fix(i18n): use everywhere i18n.getUserLanguage middleware - part 2
fix(i18n): use strings
fix(modules): load i18n
fix(subscriptions): expose cancelSubscription on $rootScope (don't know
why $scope doesn't work here). Fix UI bug
refactor(menu): add total gold to gold popover
fix(filters): use k not K for thousand