Almost finalized release notes for 0.7

Change-Id: I5db1362d893af760af6b03131fd993e30d9b2245
Merge "Almost finalized release notes for 0.7"
make-release: don't clean stuff from the zip

Change-Id: I775926080f7cec04b3de4b574f78396613ae27c5
Website: more 0.7 docs

Change-Id: I4ede3866db99a75087cb25950dec32bac615a9e6
website: add 0.7 to download page

Change-Id: I4c703abb8ebeb06b90e0a22071fb6af0957ee779