4.5.1

New features

[e8210bc] Allow to have empty page titles (@javiereguiluz)

Bug fixes

[31ab6bf] Fix deprecation message coming from AdminUrlGenerator (@jmsche)
[b01fd47] Replace annotations by attributes in test entities (@emmanuel-tilleuls)
[e7c5597] Add more functional tests (@javiereguiluz)
[c9dc4b3] Fix relative dashboard URL must reset query parameters (@kiler129)
[4db1860] Fix reflect only class variable (@jroszkiewicz)
[19bcc5a] Update Basque and Spanish translations (@aetxebeste)
[0babcbb] Misc. doc fixes (@kiler129)