belfast-8: wrong link to tgz
belfast-5: the link to the tar was missing also here
belfast-2: missing link to tar
user-doc: extract, added suggestion by Janos to have
the double dash instead of the long one
Stopped double hyphens being turned into long dashes in manual
Merge branch 'v2.1' of https://github.com/plumed/plumed2 into v2.1
Made compilation less noisy

To have the noisy behavior just compile with
make VERBOSE=1
Shorter dev doc
Added script to push doc from travis

I fixed changlog CHANGES/v2.0.txt since it was not properly
showing (probably doxygen 1.8.6 could interpret it correctly)

[makedoc]
Updated doxygen version on travis

(hopefully solve a problem with belfast-8 not showing properly)

[makedoc]
Added developer documentation on manual update

[makedoc]
Typos in a tutorial

(suggested by Richard Cunha)
Fixed unsigned format
changelog
version 2.0.5
Merge branch 'v2.0' into v2.1

Conflicts:
	VERSION
Version 2.1.1

[makedoc]
Merge branch 'v2.1' into v2.1-openmp

Conflicts:
	.travis.yml