Lunascape 6.15.2

Improvement:
Update digital signature for this application.

Updated the Gecko engine version to 45.9.0.

# Improvement
- Updated the Gecko engine version to 45.2.0.
# Fixed Bug
- Fixed the bug that the unknown space is appeared on the right side when the Lunascape window is maximized.

- Fixed the bug that the platform version of the user agent is a wrong value in Trident engine.

# Improvement
- Updated a part of default bookmarks.
# Fixed Bug
- Fixed the bug that Gecko installer is not launched after Gecko engine is selected in case that Gecko engine is not installed.

- Updated the Gecko engine version to 38.8.0.

# Improvement
- Updated the Gecko engine version to 38.7.1.
# Fixed Bug
- Fixed the bug that the starting installer is blocked by Windows.

# Improvement:
- Updated the Gecko engine version to 38.5.2.
# Fixed Bugs:
- Fixed the bug that the unnecessary tabs are added when the link in a shift-locked tab is clicked in Gecko.
- Fixed the bug that a full screen command is executed within Lunascape in Gecko.
- Fixed the bug that the small spaces are appeared around the tab on Windows 7 metro style in Gecko.
- Fixed the bug that Gecko toolbar is not displayed properly after Gecko is crashed and rebooted.
- Fixed the bug that commands using mouse click and wheel are not performed.

# Improvement
- Updated the Gecko engine version to 38.4.
- Gecko addon icons are displayed on Gecko toolbar.
# Fixed Bugs
- Fixed the bug that unknown windows are generated in Gecko engine.
- Fixed the bug that unnecessary tabs are generated when a new tab is added in Gecko engine.
- Fixed the bug that addons cannot be installed by clicking "Add to Firefox" button in "Get Add-ons" menu.
- Fixed the bug that the contents in Gecko tabs go blank when a page exists fullscreen.
- Fixed the bug that some bookmaklets including a Mixi check bookmarklet are not executed in Trident engine.