Icons are too large since angular-material 1.1.0

[maelfrize]

Angular-material introduced some breaking changes regarding the icon size with the 1.1.0 release.

This results in icons being too large.

The reason is that they added a min-height and min-width to icons.

Adding a min-height and min-width to all of md-table's md-icons should do the trick to overwrite the icon sizes correctly.

[Koslun]

Believe PR #369 fixes this the way that you've described here.