FIX: Counter imported from collections not from fixes

Closes #532.
Merge pull request #533 from dengemann/fix_counter

FIX: Counter imported from collections not from fixes
update mpl req
ENH: minor fixes making life easier.
ENH: title parameter for plot raw
COSMITS
misc in plot ica code
Merge pull request #534 from dengemann/minor_fixes_raw_plot

ENH: minor fixes making life easier.
Merge pull request #529 from mainakjas/master

User defined EOG channel
FIX: Deal with zoom in talxfm
Added time_shift() method to Evoked class.

This method extends the functionality of the evoked class by allowing a
time shift of the scale by a certain amount. The data is not touched, but
only the time-axis is changed.
Added unit test for checking time_shift() method in Evoked class.
Additionally, the time_shift() method itself was made more efficient by
unifying the absolute and relative conditions in one statement.