Add support for multiple browsers instances in test

Add multiple browser support
Add support for parallel execution of tests
Add execution of multiple browsers (defined by user) to run every test.
Simplify the use of some functions like findelement(by) -> findelementbyid, etc...
Complete review and improve automation framework

Complete improvement of framework, recreate ExtJS Grid and Tree classes
Begin to convert tests from old forma to new format.
Create new pages for Home/Inbox, Home/New Site, Home/Draft, Home/Participated etc...
Add new pages for tests and reorder tests in base to list of tests

Add home pages and reorder tests
Merge pull request #222 from herbertsg/AddJenkinsGrid

Add jenkins grid