Merge remote-tracking branch 'origin/feature/5591_cubic_spline_algorithms'
Merge remote-tracking branch 'origin/feature/7558_move_alg_category'
Merge remote-tracking branch 'origin/feature/5896_reduction_gui_live_again'
Merge remote-tracking branch 'origin/feature/7432_profile_fit2'
Merge remote branch 'origin/feature/6906_remove_mantid_logo'
Merge remote branch 'origin/feature/6577_reduction_gui'
Re #6577. The algorithm doesn't even use the sfCalculator module

...that certain windows buildservers are complaining about.
Proxy support for delete

Correct what lack from #7438

re #7571
Correct the definition of the proxy required from HTTPClientSession

It was found that the error was that the HTTPClientSession required
from setProxy only the host, passing the 'http::<host>' caused it to fail.

Now, the host and the port are being queried indirectly through Poco::URI,
and this solves the issue. But, we considered that it was a good practice
to test the connection, given that it will be tested only once in the
startup of mantid and will be available afterwards.

re #7571
Merge branch 'bugfix/7571_scriptrepo_proxy' into develop