Move icons in input

As discussed in https://discuss.tryton.org/t/use-material-design-in-sao/647/10?u=ced, the UI will be less clutter if we put the primary/secondary icons in the input (like in tryton).

assigned to @ced

added sao type::feature + 1 deleted label

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review54311002 updated at https://codereview.tryton.org/54311002/#ps1

review54311002 updated at https://codereview.tryton.org/54311002/#ps20001

review54311002 updated at https://codereview.tryton.org/54311002/#ps40001

New changeset d8b2638e6ab3 by Cédric Krier in branch 'default':
Replace group buttons by icons in input
https://hg.tryton.org/sao/rev/d8b2638e6ab3

added 1 deleted label and removed 1 deleted label

closed

New changeset 7135f33707a9 by Cédric Krier in branch 'default':
Replace group buttons by icons in input
https://hg.tryton.org/tryton-env/rev/7135f33707a9