Updated package.json with Gulp switch
Massive commit

* Switched Grunt for Gulp.
* Updated Styles and Scripts file structure.
* Added Autoprefixer.
* Switched to “new” Flexbox module.
Fixed minor layout spacing...

…for a post’s summary data in the detail view.
Updated and fixed "OP" label
Removed random stuff
Added strict mode to combined app script file
Added Image Viewer

* Moved some pieces of Style to their own partial.
*
* Minor code format fixes.
Fixed layout for Adding Subreddits button
Misc. improvements

* Better Style naming structure
* Unified mobile header button’s style between themes.
Added refresh icon
Properly get image URL for image viewer
On Mobile Safari, remove tap highlight color...

…on the detail view, when tapping anywhere in the comments container.
Update appcache filenames
Pointer cursor for "+" Subs button on sidebar
Improved styles for post summary, self-text and footer
Clean post summary style details for Mnml theme
Clear view's background-color

Back to white