Use the same capitalization in all project wizards

Change-Id: I6b43bc4013e38b6db2c57b8a4a7aba917f71c1ff
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Qt Quick Wizards: Don't show project importers

Fix regression introduced in 921f86dfa748468a8d7e6bb7787aed8fb8b53da9

Change-Id: I5a45d7c94e9a296ae7331d53c979bcb03f864e13
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>