Use jQuery 1.4+ as dependency in bower.json

This commit changes the version of jQuery defined in bower.json to support older version as 2.x.

We currently get a conflict within our project when using jQuery v1.11.
When installing via `bower i` there is a message where you have to manually choose which version to use. For automated installers (as for example when running on Jenkins) you need to define a resolution in `bower.json` in order to prevent a build failure.

With this path everyone who used jasmin-jquery and jquery can use jQuery v1.4 or newer. I don't know if this might cause errors with jasmine-jquery's functionality.