fix($utils,$qq.Scaler): #1163 - Change var names for closure compiler

I ran the closure compiler the following way:

`% closure-compiler --js all.fineuploader.js`

With this fix, errors are not thrown due to the use of reserved words
(byte and char).

Closes #1163
chore: inc build num
fix($qq.isFolderDropSupported): #1166 - fix dataTransfer.items truthiness

dataTransfer.items is an object in Chrome and passes the truthy test then
throws on the array indexer after && causing a bug

closes #1166

Signed-off-by: Mark Feltner <mfeltner@widen.com>
chore: Increment build num
docs($options): Typo
fix($docs): Fix Current release always highlighted in navbar
docs($search): #954 - Add duckduckgo site search to navbar

[skip ci]

Closes #954
docs($events): Typo

[skip ci]

Closes #1177
docs($browser-support): Mention upload size limits for older browsers

[skip ci]

Closes #1173
docs($brower-support): Link to chunking feature doc
Merge branch 'develop' into feature/concurrent-chunk-uploads

Conflicts:
	README.md
	bower.json
	client/js/version.js
	fineuploader.jquery.json
	package.json
chore($concurrent-chunking): inc build num closes #937