.frag file extension added for JavaScript with some new samples
Add Cheat Engine's .ct as an XML extension

Add .ct as an XML extension instead of its own language, as recommended by @arfon in #1199
Samples update
Merge pull request #1226 from christianbundy/patch-2

Add Cheat Engine's .ct as an XML extension
Merge branch 'master' into 1178

Conflicts:
	lib/linguist/samples.json
Merge pull request #1227 from github/1178-update

1178 update