Add more tests for partial-blocks and inline partials
Add more tests for partial-blocks and inline partials

- Multiple partial-blocks at different nesting levels
- Calling partial-blocks twice with nested partial-blocks
- Calling the partial-block from within the #each-helper
- nested inline partials with partial-blocks on different nesting levels
- nested inline partials (twice at each level)

wycats/handlebars.js,jbboehr/handlebars.js,jbboehr/handlebars.js,handlebars-lang/handlebars.js,wycats/handlebars.js,gautamkrishnar/handlebars.js,mosoft521/handlebars.js,mosoft521/handlebars.js,gautamkrishnar/handlebars.js,mosoft521/handlebars.js,handlebars-lang/handlebars.js,mosoft521/handlebars.js,wycats/handlebars.js,handlebars-lang/handlebars.js,handlebars-lang/handlebars.js,handlebars-lang/handlebars.js,jbboehr/handlebars.js,gautamkrishnar/handlebars.js,mosoft521/handlebars.js,wycats/handlebars.js,wycats/handlebars.js