Rmoved +/- buttons and hid summary text

See issue #129
Added a button to show/hide the summary

See issue #129
Added resource tags to resource summary tile

Style of the tags still needs to be fixed
See issue #129
Made resource summary concept tag labels more visible

See issue #129
Changed style of resource concept tags

See #128 and #129
Fixed resource/concept understanding CSS conflicts
Merge pull request #139 from kennib/resource-summary

Resource summary