Style register page to the new L&F

Small style changes to the login page as well.
Change the way the groovy compiler is overriden by using a property with the version number.
i18n the new registration page.
Disable redundant Sign In and Register links on those same pages.
Rename method on BannerAction.
UI Changes to login and register pages

Internationalize messages.
Update wording and styling.
Fix issue when directly accessing the login page to sign up.
Remove banner from login/sign up pages.

Change wording on sign up and login pages.
Introduce a template that excludes the banner for these two pages.
Merge commit '4bcf574b8a^' into stylized-register-page
Merge commit '4bcf574b8a' into stylized-register-page
Apply reformat to changed files.
Merge remote-tracking branch 'origin/master' into stylized-register-page
Apply formatter rules to remove some remaining tabs and missing newlines.
Add terms of use page, add terms of use url in server configuration
Fix checkstyle violation
Move terms of use to zanata.org, rename copyTransEnabled for applicationconfig
Update to latest zanata-parent (and slf4j)
Avoid hard-coding http for gravatars

This should fix the warning: "The page at https://zanata... displayed
insecure content from http://www.gravatar.com/avatar/..."
Create project version WebDriver tests

Tests for creating a version with customised language list and version
id validation.
Fix wording and layouts on login and register pages.
Merge pull request #236 from zanata/slf4j-175

Update to latest zanata-parent (and slf4j)
Merge pull request #237 from zanata/fix-gravatar-warning

Avoid hard-coding http for gravatars