Bug fixes

[9aec13b0] Fix styles of dropdowns (@MrAnyx) [57d7f729] Fix showing error badge on tabs for HTML validation (@Lustmored) [d941569f] Apply "disabled" styles on disabled select items too (@lyrixx) [eb84969b] Simplify dropdown menu HTML and move styles from span elements to classes (@TmszLBmrv) [12fb30da] Return void for reset() method in DataCollector (David Pelletier-Ulrich) [5e2c3742] Fix a double translation of tab labels in details view (@javiereguiluz)