CSS and HTML UI polish: tidied up font sizes, margins and paddings.
Used more gradients to make the app less "flat"

- fix headers spacing
- improve color selection
- button are more proportionated (smaller)
- use correct color with gradient in homepage headers
- more margin tweaks

- remove header bottom white line
- reduce the h4 separator height
- fix the recipient selector header colors

add back  enable_text_select

-Fixed

# looks like some top padding is required here, what do you think?
-I prefer without it, it’s more standard with native UI

# looks odd that "what to send" and "amount" labels are of different size
-Fixed

# "+ Add fields" seems too close to "who signs", what do you think?
- I believe it’s fixed  but I have’t Benn able to test in “real life” (I commented out the ng-hide for test)

# and whenever you select sending data in "what to send", the Send button seems too close to the bottom of the screen
- I will also be cut  or under the fold if the signer list get long enough/ To address this we would have to make the button a fixed position and the test of the page scrollable within something like an iframe

# the new sent/received tags are so big, they do not look well on iPhone 5 screen (change the width in package.json to 320px to reproduce)
I have 0 bytes and no history in my build so I can’t re produce it but it looks like this screen would need some adjustment.

# not sure if dollar amount is correctly aligned with green checkmark, what do you think?
-I added some offset. Fixed.

# "textcoin" tags now get wrapped even on 400px screen
- I was not able to reproduce, I have no history.

# well, they were wrapped before but at least they kept the padding to the right

# when i start typing into the Amount field on the Send tab, the field height suddenly changes
- Do you talk about the send page. I don’t observe that.

# what made you remove the gradient color from the home screen?
- Not on purpose. It has been restored.

# when i start typing into the Address field on the Send tab, the field height suddenly changes too
- Do you talk about the send page. I don’t observe that.


 - I also made sure sore url in the witnesses preferences won’t run out of screen