fix travis. build statically ICU.
add missing targets
use latest mochicow

Latest mochicow is in sync with cowboy and use latest ranch. Add it to
the included apps.
use git tag to describe the release version
develop branch is now only supporting erlang R15.
add github pages cname
only support R15
add CORS default config
add documentation generation
fix title & epub
new doc
link to apache couchdb documentationa
put the link on the wiki
integrate erica in rcouch
don't cd to run erica
fix doc build
update doc
add missing doc
put httpd settings in their own files.

related to #17.
move uri file path in couch_httpd.ini