Keywords link to Idea page where ideas filtered

Sidebar and Idea related keywords links changed and now /ideas?kw=number
that shows only all ideas that includes the selected keyword
Keyword links now link to kw related Ideas page

Merge branch 'filterkeywords' into development

Conflicts:
	app/controllers/ideas_controller.rb
	app/views/layouts/application.html.haml
Fix: Change title to include keyword
Fix: Add selected keyword to title
Merge branch 'filterkeywords' into development
Merge pull request #46 from akesulah/development

Keywords link to Idea page where ideas filtered

resolves #44