[2.3] Inherited TV value label fix

Addresses issue #11658.

**BEFORE (using an RTE):**
![ace_tv_editor](https://cloud.githubusercontent.com/assets/352182/3515348/fc2c406c-06d4-11e4-91a3-f95e824d0a04.jpg)

**AFTER (using an RTE, with long TV description):**
![inherit_tv_fix](https://cloud.githubusercontent.com/assets/352182/3574529/0ea6b4f8-0b7f-11e4-8a42-a74cc3654753.jpg)

**AFTER (using an RTE, NO TV description):**
![tv_after_rte_no_desc](https://cloud.githubusercontent.com/assets/352182/3574715/f3c21cf2-0b80-11e4-9208-9702d96dbb86.jpg)

**BEFORE (default textarea):**
![tv_before](https://cloud.githubusercontent.com/assets/352182/3574625/e34027a8-0b7f-11e4-89b7-112bb817fd28.jpg)

**AFTER (default textarea):**
![tv_after_default](https://cloud.githubusercontent.com/assets/352182/3574669/82fce2f4-0b80-11e4-9908-ac0d17045f3a.jpg)