Add pre_package event to wp8 project

WP7 project was already done in commit: bd2c667e947b3fda05541e0d1a124d23df60a132
Wait for the pre_package event to finish, or the update_csproj function might give unexpected results.
Fixes both the wp7 and wp8 parser.
Code style (indentation)
begin firefoxos tests
CB-5066: merged in windows 8 support into master from cordova-3.1.x
CB-5066: continuing merge of windows 8 stuff
config.xml helper function is used, removed error merge of wp folder.
CB-5066: dealing with windows8 issues
CB-4774: Copy www assets before running plugin prepare
CB-2234 Add 'cordova info' command
CB-5066: merged in windows 8 support into master from cordova-3.1.x
CB-5066: continuing merge of windows 8 stuff
config.xml helper function is used, removed error merge of wp folder.
fixed merge conflict
Merge branch 'master' of github.com:jlongster/cordova-cli
windows8: fixed project parser issue, and updated tests
windows8: remove debug console.log
Update tests for commit d1c8024: update_project() should not call update_www() directly
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-cli
Merge branch 'master' of github.com:purplecabbage/cordova-cli