added files for the firefox addon
added firefox addon files
ignore firefox-addon path, fix generator script
avoid unsafe links for firefox-addon
many optimizations in addresses pulling
fix signin
Merge pull request #400 from matiu/feature/optimizations

Feature/optimizations
make dates human friendly
Merge pull request #397 from yemel/feature/time-ago-dates

make dates human friendly
Group inputs by address
Merge pull request #401 from yemel/feature/group-txinputs-by-address

Group inputs by address
add multiple optiomizations for 30+ tx wallets
add multiple optiomizations for 30+ tx wallets
Merge pull request #398 from colkito/feature/firefox-addon-files

Feature/firefox addon files
Merge pull request #405 from matiu/feature/optimizations2

Feature/optimizations2