Merge pull request #75 from da2ce7/fix_pom-v0.5

Quick fix an issue with the pom for exchange
static -> instance. timing change
Merge branch 'v0.5-bitcoinj-0.7' of github.com:jim618/multibit into v0.5-bitcoinj-0.7
updated readmes. bumped to XChange 1.4.0. faster connect. refactored
wallet to avoid deadlock on send. removed a refresh in wallet list.
repaint is needed. put back in.
BasePanel and Extensions
enqueue Redraw function for viewable
modular preferences panel
module view factory