Merge branch 'gm-home-link-on-logo' into 'master'

feature(header): home link added to the logo

See merge request startinblox/applications/sib-app!33

src/header.pug

 #logo
-  img(src="/images/logo.png" width=111 height=32)
+  sib-link(next='members')
+    img(src='/images/logo.png' width=111 height=32)
 
 #search-bar
   input#search-input(type='search')