Proposed, and implemented, some enhancements (1Mb + 1Mb firmware, resizable jsvars size, ...)

Thanks

EDIT:

No need for two different linker scripts (app1 and app2)

good point, as it is just a linker script keep both :-)

Shrink firmware size by six pages and always use first 1MB area, five pages to save code and one page for wifi. What do you think ?