Fixed issue where bad time_t values would crash when converting to iso string

Conflicts:
	src/include/util/gcTime.h
	src/shared/unittests/code/util/util_misc.cpp
Centered login forms to ensure they dont apear below taskbar
Fixed mods been hidden on windows
Fixed back button not working
Fixed client not creating a valid uninstall shortcut link and not setting correct uninstall path in reg for add remove programs
Aded EventC that makes a copy of the parameter instead of passing it by ref
Added fixed string that doesnt replace its buffer on assign
Fixed issue where change in user profile (i.e. avatar) is not reflected in the app
Fixed missing language strings
Fixed issue with working out if url is safe or not
Added text to gift page to show how many gifts there are
Fixed pages loading forever
Added ping to play list to reload page when it stops responding