Fixed width and font-size.

Enhanced typography, spacing, colors, images. Removed unecessary styles
and images. Tweak templates etc…. Work in progress.
[#609] Fixed survey asset

Still work in progress
[#609] Fixed incorrect hover behavior
[#609][#570] Fixed footer to wrap on lang. switch
[#609] Fixing Security setting
[#609] Fixed header & footer size
[#609] Further Stylesheet and Template refactor
Added SASS files + layout improvements
[#609] Left sidebar and layout fixed.
[#609] Final fix on layout
[#609] Further SASS integration

Fixed layout of surveys, and remove the collapsable top nav effect
[#609] Fixed random typography issues.
Merge pull request #715 from akvo/issue/714_invalid_xml_characters

[#714] Escape predefined XML characters in survey group name
[#717] Read API with basic auth
[#717] HMAC based authentication for read API
[#717] Compare strings with .equals
[#717] Reformat java files
[#717] Calculate the HMAC signature only if client time and server time are within specified time window.
[#717] Add UserRestService endpoints to create and delete apikeys

* POST /users/{id}/apikeys -- Create new apikeys for user
* DELETE /users/{id}/apikeys -- Delete apikeys for user
[#717] Added ability to (re)generate and revoke apikeys from the Dashboard