* clean up toml files * update the parity ethereum toolchain docs * update contribution guide and issue templates * update desktop and service files * build clib examples with 8 threads * update header templates * replace parity technologies with parity ethereum logo
* docs: update repository links * docs: update repository links in contribution guide
* Add contributing guidelines to the repository. * Add code of conduct to the repository. * Add note on CLA to contributing guidelines. * Update contribution guideline headings * Move CoC and ConG to .github * Fix links * Remove broken fork link.