Merge branch 'release/2.1.5' into develop
2.1.5
Open package details in a new tab

This patch facilitates user to open package details in a new tab
instead of opening it in the same tab so that he/she can vote or add
tags to the package while looking at its details.
Merge pull request #178 from abhaykadam/develop

Open package details in a new tab
Fix rhel conditionals.
Merge pull request #180 from fedora-infra/feature/rhel7

Fix rhel conditionals.
Loosen deps.
Use the modern syntax for flask.wtf.
Stuff correct headers in there.
strip data returned by wtforms.  it now includes white space for unknown reasons.
This is where all that whitespace was coming from.
Merge pull request #181 from fedora-infra/feature/modernize-for-el7

A number of changes for el7.
2.2.0
Merge branch 'release/2.2.0'