Current openwrt-yun version is shown in homepage footer. Closes ardui…

…no#15

REST api timeouts can now be set using 'option socket_timeout NUMBER'…

… in /etc/config/arduino

Fixed wrong JSONP responses. Fixes arduino#13

Zepto was missing from the login page

Fixed wrong string matcher: it wasn't failing with variable number of…

… spaces. Fixes arduino#12

Upload sketch: added "upload sketch" form for uploading a precompiled…

… sketch on the 32u4

Releasing version 1.4

Image upgrade: printing build time of the upgrade and notifying if it…

…'s newer than the running one

Releasing 1.2.1

Mailbox does not accept empty requests any more. Closes arduino#7