refactor(requirejs): refactored path config for better compatibility with masonry lib

it seems a good practice to define the bower_components as the basurl for the requirejs
stuff. so every lib can require its stuff from it...

see https://github.com/metafizzy/outlayer#requirejs
refactor(masonry): moved from isotope to masonry, and to my own variant of masonry: fluid-masonry

BREAKING CHANGE: styling of the masonry tile different.
the styling of the masonry tiles is a little bit different: we do not need a padding around each tile;
this is handled by the gutter option. we need a margin-bottom for every tile in the size of the gutter.

the gutter width and the minColumnWidt can be given by element sizing, means we can specify it in the css.
Release v1.0.0