Svg Inject Versions Save

• fix: data-inject-url attribute not set on first injection
• Use same random ID suffix for injection of one SVG

fix version number in comments

ignore leading and trailing whitespaces and comments in SVG files

Fix attribute selector for preventing unstyled image flash

fix tests for IE9-11

remove jshint warnings

• new test for disabled caching
• title attribute is set an old title element gets replace by the new title element
• improved code commenting
• minor code optimizations

• API fixed