Fix behavior of select all checkbox

The "select all" checkbox in tables didn't work due to a missing CSS class.
Add the missing class so that the checkbox behaves as expected.

Change-Id: I5dcfdf9a7a60ea516c5343fabeb7a8f79b107fe7
Closes-Bug: #1259537
Removal of underscorejs library

    Underscore is poorly used into Horizon. All underscore functions
have been rewritten with jQuery utils, this will reduce the
fragmentation of Horizon code, and lower the javascript footprint.

Change-Id: Ica1469e115d9e135d5a3a0795b4b5e1809f4d6b4
Implements: blueprint delete-underscore
Merge "Removal of underscorejs library"
Merge "Fix behavior of select all checkbox"