updated gems, fixed retrieving slides from slideshare
removed masonry from project
injecting triples, restored injecting namespace triple in page
added exception for pages, where no triples can be injected
better injecting triples
removed styles for contribution, login intor styles
removed unused views

changed view for creating contribution
removed unused route
moving contribution to page model
better default text for contribution page
added permissions for updating contribution
ui for contributions on pages

applying worker findings
moved erb to haml for page show
disable doubling history during switching the tabs
formatting
better relative to navbar for content positioning
better work with tabs in page#show

formatting
refactored contribution tab
added exception for sending analyze request
added tab for page changes