add relationship to TestrunRequestedHost from Host for moving
testrun-list from tapper-testrun to tapper
[RFK] testrun-rerun moved to tapper
 - changed Tapper::Schema::TestrunDB::Result::Testrun from returning a
testrun_id to returning a testrun result object
bugfix "ordered_by" to "order_by"
add missing value for comment "wait_after_tests"
sub update_content catch update for conditions in case of getting more
than one new condition
- add filling of column updated_at to update_content()
change some lines of code for a better performance
add support of raw sql statements
 - add support of raw sql statements to tapper
 - performance changes for report list
[TEST] adapted to new API of rerun

Testrun::rerun() now returns a schema object instead of the testrun
id. (See d81d733b). This patch adapts the test to reflect this fix.
merged reportsdb and testrundb
add chart support to tapper
some little cosmetic changes
 - add PASS/FAIL-Filter to Testrun-List
add benchmark tables to Tapper-Schema
some webgui changes
 - bugfix: charts ( metareports )
 - add continuous testing control page
[TEST] wait_after_test can no longer be null
[FIX] allow null again

There are still code paths that bring in NULL as acceptable
value for some of the elements that got "not nullable" in
one of the last commits. This patchs therefore allows null
again for these elements until all those code paths are fixed.
deactivate an untested, broken function
- remove buggy deployment function
- add TODO comments
Copyright fixed
copyright fixed