use Database-Transactions
added protection against multiple transaction-starts
added function documentation
transaction-support for PostgreSQL added
tidier implementation + bugfix
each request should be a transaction
Transaction functions throw dbExceptions now
committing a Transaction is done now within try-block
copy and paste errors corrected
begin_transaction in mysqli started in php5.5 - alternative implemented
another typo
Move beginTransaction
Merge pull request #1 from mattab/patch-1

Move beginTransaction
rename variable according coding standard
secure transactions against nesting
reverted Pgsql.php to old state ( unsupported )
fix missing paranthesis
decreased segment name trimming limit so it does not break down layout when segment list has scrollbar displayed
import_logs give a IOError: [Errno 29] Illegal seek when receive log from pipe because
we can't seek stdin in pipe mode
if the capture selector matches multiple elements, make sure all of the elements will be captured and visible in the screenshot
when detecting the clipRect ignore elements that are not visible and trigger an error if no element is visible
added possibility to compare against a previously captured screenshot if using selector