translation(it): Update Italian translations #14

Job	Run time
windows (HUGE, msvc, no, no, x64, stable)	6m 44s
windows (HUGE, mingw, yes, yes, x86, stable, yes)	10m 51s
linux (tiny, clang, native)	4m 32s
windows (HUGE, msvc, no, yes, x86)	8m 26s
linux (tiny, gcc, native)	1m 58s
windows (HUGE, mingw, yes, no, x64, yes)	9m 35s
macos (tiny)	1m 6s
linux (normal, clang, native)	6m 7s
windows (NORMAL, msvc, yes, no, x86)	6m 23s
macos (normal)	7m 29s
linux (normal, gcc, native)	5m 42s
macos (huge)	12m 32s
windows (NORMAL, mingw, no, yes, x64)	10m 45s
linux (huge, clang, native)	11m 10s
windows (TINY, msvc, yes, yes, x64)	2m 11s
linux (huge, gcc, native)	10m 48s
windows (TINY, mingw, no, no, x86)	4m 56s
linux (tiny, clang, nogui)	2m 45s
linux (tiny, gcc, nogui)	2m 37s
linux (normal, gcc, i386, ./src/shadow)	8m 3s
linux (huge, gcc, uchar, testgui, true, dynamic)	9m 13s
linux (huge, clang, asan, 5.1)	17m 6s
linux (huge, gcc, unittests, true)	3m 13s
linux (normal, gcc, vimtags)	2m 38s
	2h 46m 50s

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