Fixes #3811 updating to bootstrap 3

fixes #2420 - extract strings for i18n from JavaScript, various i18n fixes

fixes #2426 - translate model and column names to English

Feature #2368 - i18n extracting strings

flot charts

Use flot charts instead of highcharts.
flot charts license is more friendly.

This version of the code is feature compatible with the old charts,
including:
pie: drill-down and expend.
stacked charts: zoom, hide series in legend.
all types has tooltips....

Add localization calls to the subnets and the trenda pages.

There are other changes to the common layouts based on simple testing.

fixes #2141 - Trends grahs issue

fixes #2062 - Add max_trends setting

fix trend labels for ForemanTrends

fix #1925 single value trends pages

Revert "fix #1925 single value trends pages"

This reverts commit bf89a7f3e86c08eb1cd38ae473a0edc754f8131e.

this was merged by mistake

fix #1925 single value trends pages

feature #1906 add Trend information

Signed-off-by: Amos Benari <abenari@redhat.com>
Signed-off-by: Ohad Levy <ohadlevy@gmail.com>