Basic tests for legend item auto width
Legend accepts parameter for automatic item widths in horizontal legends
Improved tests for legend item auto width, added test checking if offsets for both options are different
Minor formatting change
More detailed test for legend items
Merge pull request #801
conform to jscs style guidelines

for #801
artifacts for #801
ignore all jasmine spec runners
refine legend auto width test for #801

for @wssbck: altering the test slightly so that it tests that it
is doing something better, rather than just something different.

in this particular case, the fixed width is too small so it's
sufficient to test that the auto width is greater

(as can be verified by running the jasmine tests in the browser
and putting breakpoints after each of the .render()s)