Fixed Chargeback Rate display

Fixed code to display of Cloud/Infrastructure providers rates after Save
Code fix properly identifies any EMS as such
Refactored code for better readability

Linked similar GitHub issue to the BZ ticket

https://bugzilla.redhat.com/show_bug.cgi?id=1073083
https://github.com/ManageIQ/manageiq/issues/138#event-148990147
Code refactored for compactness and readability.

Refactored the code to enhance readability.

https://bugzilla.redhat.com/show_bug.cgi?id=1073083
https://github.com/ManageIQ/manageiq/issues/138#event-148990147
Converted image-based form buttons to Patternfly btn class buttons
Deleted line that was not being used and causing a crash on C&U screen

Deleted code that was setting 'interval' local variable that was not even being used in the method and was causing a crash when changing a value in "Group By" pull down on Host C&U screen when there is no C&U data available for the chosen group, it is mostly happening on the fresh appliance.

https://bugzilla.redhat.com/show_bug.cgi?id=1123195
https://bugzilla.redhat.com/show_bug.cgi?id=1127765
converted tabs to spaces, aligned hash rockets, adjusted formatting
Converted image-based form buttons to Patternfly btn class buttons
Fix VMRC connectivity for IE browsers

https://bugzilla.redhat.com/show_bug.cgi?id=1120096
Merge pull request #352 from bmclaughlin/vmrc-connectivity

Fix VMRC connectivity for IE browsers
converted tabs to spaces, aligned hash rockets, adjusted formatting
Merge pull request #345 from GregP/chargeback_rate_display

Fixed Chargeback Rate display
Merge pull request #348 from epwinchell/patternfly_formbuttons_2

Patternfly formbuttons 2
Merge pull request #356 from epwinchell/patternfly_formbuttons_3

Patternfly formbuttons 3
Merge pull request #347 from h-kataria/removed_line_of_code_not_in_use_causing_error_in_C&U

Deleted line that was not being used and causing a crash on C&U screen