PXE Servers / Images: render tables consistently with the rest of the ui

We'll use shared/summary/textual to render the table rather than
creating the whole table row by row, column by column manually.

https://github.com/ManageIQ/manageiq/issues/342
Customization Templates: render tables consistently with the rest of UI

We'll use shared/summary/textual to render the table rather than
creating the whole table row by row, column by column manually.

https://github.com/ManageIQ/manageiq/issues/342
System Image Types: render tables consistently with the rest of UI

We'll use shared/summary/textual to render the table rather than
creating the whole table row by row, column by column manually.

https://github.com/ManageIQ/manageiq/issues/342
ISO Datastores: render tables consistently with the rest of UI

We'll use shared/summary/textual to render the table rather than
creating the whole table row by row, column by column manually.

https://github.com/ManageIQ/manageiq/issues/342
Merge pull request #366 from mzazrivec/pxe_templates_consistent_table_rendering

Infrastructure -> PXE: render tables consistently with the rest of the webui