Upgraded third party libraries to latest versions.

(Redmine issue: #3387)

conf/requirements-latest-dev.pip

-setuptools
-wheel
-nose
-pyflakes
-pylint
-sphinx
-sphinx-rtd-theme
+setuptools==41.0.1
+wheel==0.33.4
+nose==1.3.7
+pyflakes==2.1.1
+pylint==2.3.1
+sphinx==2.1.1
+sphinx-rtd-theme==0.4.3

conf/requirements.pip

-python-dotenv==0.10.1
-pytz==2018.5
+python-dotenv==0.10.3
+pytz==2019.1
 ply==3.11
-psycopg2>=2.7,<2.8 --no-binary psycopg2
-babel==2.6.0
+psycopg2==2.8.3
+babel==2.7.0
 wtforms==2.2.1
-sqlalchemy==1.2.17
-alembic==1.0.7
-jinja2==2.10
+sqlalchemy==1.3.5
+alembic==1.0.10
+jinja2==2.10.1
 blinker==1.4
 bsddb3==6.2.6
-flask==1.0.2
+flask==1.0.3
 flask-login==0.4.1
 flask-mail==0.9.1
-flask-migrate==2.2.1
-flask-babel==0.11.2
+flask-migrate==2.5.2
+flask-babel==0.12.2
 flask-principal==0.4.0
 flask-wtf==0.14.2
 flask-script==2.0.6
-flask-sqlalchemy==2.3.2
+flask-sqlalchemy==2.4.0
 flask-debugtoolbar==0.10.1
 flask-jsglue==0.3.1
 dnspython==1.16.0
 geoip2==2.9.0
-requests==2.21.0
-rrdtool==0.1.14
+requests==2.22.0
+rrdtool==0.1.15
 pyyaml==5.1.1
 pydgets==0.9
 pyzenkit==0.54