Responsive website for IE

Hi, I am a project manager for a new Government website that we are building with drupal 7. This is a very small site with just 3 pages. The site is not responsive when seen in IE of any version. My designer says, IE will not support HTML5 and CSS3. I am afraid, my project will end up failure because of this. Could any one have any idea on this?

Content Organization with n level categories

Which approach should I use to solve this problem.
I have top level 27 different types of product and each product has several categories and again each categories having several subcategories and every sub categories may have different fields.
Example:
---MOTOR
----------AC MOTOR
--------------SINGLE PHASE
--------------THREE PHASE
----------DC MOTOR
--------------SINGLE PHASE
--------------THREE PHASE
---CABLE
----------LT
--------------PVC

Deprecated function: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in _views_slideshow_prepro

Hi I am a newbie to drupal and I upgraded to 7.23 and tb_sirate_starter, I don't know what to do. I tried to edit the views_slideshow.theme.inc file but it seems like I am breaking this even more.
Please help.

Error:
Deprecated function: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in _views_slideshow_preprocess_views_slideshow() (line 73 of /Applications/XAMPP/xamppfiles/htdocs/maj_wcdt_site/sites/all/modules/views_slideshow/theme/views_slideshow.theme.inc).
Deprecated function: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in _views_slideshow_preprocess_views_slideshow() (line 76 of /Applications/XAMPP/xamppfiles/htdocs/maj_wcdt_site/sites/all/modules/views_slideshow/theme/views_slideshow.theme.inc).
Deprecated function: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in _views_slideshow_preprocess_views_slideshow() (line 76 of /Applications/XAMPP/xamppfiles/htdocs/maj_wcdt_site/sites/all/modules/views_slideshow/theme/views_slideshow.theme.inc).
Deprecated function: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in _views_slideshow_preprocess_views_slideshow() (line 76 of /Applications/XAMPP/xamppfiles/htdocs/maj_wcdt_site/sites/all/modules/views_slideshow/theme/views_slideshow.theme.inc).

Growth (increasing) of database: URGENTLY!!! Please, pay your attention

When i add smth. into the body of content type (has no matter whether it an inserted image or simply mount of text), it gives harmful growing of database.
Even if i use authcache, filecache and boost or just combination of 2 of them or some cache module separately, it has no effect
my problem is how to give to know for field body to serve its' content not inside of DB, but maybe as caching element or as a files like other entities provide it

Can I truncate all cache tables?

Can I truncate all cache tables without doing harm to the site whatsoever? I need to truncate cache_form which is 2.6G already. Please help, thanks!

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