Added parameters property to RedwoodContext
Tests splitted to framework tests and samples ui tests

Main reason is that I have Visual Studio Profesional which does't support UI tests and whole test project was not compilable
fixed parsing identifiers

it was parsing only names from letters and digits, for example data-attribute caused problems
fixed control builders caching

now the view is builded only once. There was some infrastructure for this before, but was not working, because the cache was reinitialized every request.
Double braces are now valid in attribute binding
Merge pull request #1 from exyi/master

Fixes in tokenizer, control builder cache and splitted test project