The design of Jelastic Logo and text was changed to a common style

Dear Eliran and Marcia, please accept my apologies for my pedantry. We found that logo and text header we previously submitted were in different style to logos and text of other partners so we decided to change them in order to have same style as others. We appreciate your help and we proud to be a part of Gitlab partners ecosystem. Could you please accept one more cosmetic merge request? Thank you in advance! @marcia @eliran.mesika /cc @gl-website