IDEUI-206 Add missing field indicators for maven project wizard page

Task-Url: https://jira.codenvycorp.com/browse/IDEUI-206
IDEUI-203 Project Wizard: improve UX, focus on the first field of the
form when resetting the maven page

Task-Url: https://jira.codenvycorp.com/browse/IDEUI-203
IDEUI-206 Project Wizard: improve Maven page, use the same style then
the main page for inputs

Task-Url: https://jira.codenvycorp.com/browse/IDEUI-206
Merge pull request #7 from sunix/projectWizard

Project wizard
Unbind classic java editor
WIP autocomplete