Add coverity scan support to travis builds

any builds on the coverity_scan branch should now get scanned.
Fix syntax error.
Maybe fix errors?
Don't use matrix for static analysis to save our build quota
Merge pull request #967 from mc-server/master

Merging master to coverity_scan for scan
Merge pull request #968 from mc-server/master

Second attempt at scan
Merge pull request #970 from mc-server/master

Merge to coverity
Merge pull request #976 from mc-server/master

Coverity merge
Merge branch 'master' into coverity_scan

Conflicts:
	.travis.yml
Merge pull request #1081 from mc-server/master

scan
Merge pull request #1107 from mc-server/master

Coverity merge
Merge branch 'master' into coverity_scan
On destroy ender crystal, create bedrock and fire
Merge pull request #1295 from mc-server/crystal

On destroy ender crystal, create bedrock and fire.
WebAdmin: Added GetURLEncodedString().
WebAdmin: Manually exported string conversion functions.

ToLua generated an extra return value for GetHTMLEscapedString() and GetURLEncodedString(), making them difficult to use.
Removed an old and outdated comment.
Fixed swing arm animation when you ate.
Merge pull request #1305 from mc-server/Food

Fixed swing arm animation when you ate.
Merge branch 'coverity_scan' of https://github.com/mc-server/MCServer into coverity_scan